Water quality monitoring device supports RS485/Modbus RTU sensor and 4–20 mA, 4G connection via HTTP/HTTPS, MQTT, FTP. Data is saved locally for 100 days, automatically transmitted when restoring connection. The device warns of exceeding Min/Max thresholds, sensor errors via application, SMS, calls and contacts. The system integrates an independent HMI, establishes maintenance schedules, forwards data between devices, supports retrieval and configuration according to centralized monitoring data

Equipment for monitoring water and wastewater quality MEI GROUP research and development, supports connecting sensors via 4–20 mA, RS485/Modbus RTU and Digital Input. Data is collected, processed and transmitted Server via LAN or Wi-Fi, and save at least Offline 100 days with a cycle of 5 minutes/time. When the network is restored, the device automatically synchronizes data. Platform Web/App allows real-time monitoring, viewing graphs, history, setting alarms, exporting reports and managing mult

MEISync is an industrial IoT controller that integrates 10 Relays, Ethernet LAN, real-time RTC and large capacity Winbond memory. The device allows automatic control according to schedule, multiple operating hours and remote control via Web/App. Data and activity history are saved locally and automatically synchronized when there is a network connection. Supports remote OTA, anti-crash Watchdog, backup firmware and self-recovery mechanism, helping the system operate stably 24/7 in lighting, auto

IoT Gateway MLD device developed by MEI GROUP, supports LAN/4G LTE connection, data collection from RS485/Modbus RTU, Modbus TCP, LoRa and other industrial protocols. The device integrates W25Q128 memory or SD Card to store FIFO buffer, ensuring no data loss when connection is lost. Gateway supports SSL/TLS, remote OTA, incident warning and data synchronization to Cloud, SCADA or enterprise server, suitable for water supply, environment, agriculture and smart factories.

MEI Data Logger is a monitoring device MEI GROUP developed, used for measuring rain, water level, flow, pressure, sluice gate opening and industrial sensors. Equipment used STM32F407, integrated RTC, connect 4G/LoRa, support realtime or save energy. Hardware available 2 RS485, 4 pulse channels, 3 channels 4-20mA, gate TTL, expand communication HMI. Data saved offline 60 days, automatically synchronizes when there is a network. The system also monitors battery, solar charging, cabinet temperature

Sensor Hub DTG.902 is an industrial data collector produced by MEI GROUP development, acting as a center for connecting and monitoring sensors 4–20 mA and RS485 Modbus RTU in IoT systems. Equipment used microcontroller STM32F407 High performance, integrated battery voltage and capacity monitoring function, together 01 Digital Output output to output warning or control signals. DTG.902 mode support works continuously or save energy, use source 12 VDC. Flash memory allows data to be saved 90 days

BPS Controller – Model CT.400 is an industrial controller and monitor made by MEI Group research, design, development, and use STM32F407 high performance. Integrated equipment 4G LTE, RS485/Modbus RTU, 03 AI 4–20 mA, 10 DI (0–24 VDC), 10 Relay DO, 03 AO 0–10 V and 03 AO 4–20 mA, allowing connection to sensors, inverters, power meters, HMIs and many industrial devices. CT.400 supports configuration and OTA firmware update remotely, save data when connection is lost and automatically synchronize t

DTG.300 MEI is a smart industrial Data Logger specialized for monitoring flow, pressure, water level and field sensor signals. The device supports reading data via pulse, RS485 Modbus RTU and analog signals, stores data locally when connection is lost and automatically synchronizes to Web/App when the network restores. DTG.300 allows instant alerts via Web/App, SMS or calls, supports remote configuration and firmware updates. The solution is suitable for the water supply industry, pumping statio

Industrial output counting equipment uses power 24 VDC, connection support Wi-Fi or LAN to monitor and manage data in real time via Web App. Designed equipment Sealed dust-proof cover, resistant to electromagnetic interference (EMC/EMI), suitable for operation in factory environments. Supports counting output from pulse signals or sensors, setting target output, statistics by shift, day, month and user authorization. The device integrates memory to store data when the connection is lost and auto

MEI access control and monitoring system is the solution IoT Access Control Use microcontroller STM32, connect Ethernet (LAN) to manage factory entrances and exits in real time. Support equipment RFID card reader, people counting sensors and controls Magnetic Lock, allows opening by card, Web/App or according to set time frame. The number of people remaining in the area is shown above 7-segment LED display. Integrated system emergency push button to unlock when escaping, support Offline Data Log

4G MEI ECO pressure monitoring device Use microcontroller STM32F407, support 1 or 2 pressure measurement channels with the ability to automatically identify sensors. Device that transmits data through 4G, real-time monitoring on Web App, warning based on fixed threshold or time frame. Support operating mode continuously or save energy, integrated solar charging and meets standards IP67. Data is saved locally 200 days (cycle every 15 minutes), support SD Card saves configuration and history, and

MEI pressure monitoring equipment uses the platform ESP32, designed for industrial, power supply environments 12VDC and connection WiFi in the ecosystem MEI ECO. The device can read multiple pressure sensors and monitor multiple fault contacts via signals 0-24VDC, and output at the same time relay to control horn, warning light, electric valve or PLC interlock. Data is saved when the network is lost and automatically synchronized when connected again. Support equipment OTA Remote firmware update

MEI CNC machine output monitoring system is a set IoT Edge Data Logger Use microcontroller STM32, collect signals from Stack Light without intervention in the PLC or CNC program. The device automatically determines the status Run, Idle, Alarm, Setup, calculate output and indicators OEE in real time. Connection support system Wi-Fi or LoRa, transmit data to the platform MEI ECO via protocol MQTT, integrated Offline Data Logging, automatically synchronizes data when connection is restored and supp

The 4G MEI ECO Logger is an industrial data collector that supports continuous or energy-efficient operation, suitable for a variety of IoT and SCADA monitoring systems. The device integrates 2 RS485 Modbus RTU ports, 4 4–20 mA inputs, 2 pulse reading inputs and 3 control relay outputs. The logger monitors battery voltage, temperature and humidity inside the device, using the highly accurate RTC DS3231. Data is stored on 16 MB Flash and 256 KB EEPROM when connection is lost. Supports remote conf

Pump station pressure regulation equipment of MEI GROUP is a specialized controller that helps maintain stable pressure on the water supply network by adjusting the inverter frequency accordingly critical pressure point. The device collects pressure data from 4–20mA sensors at the station or from remote pressure nodes via LoRa, combines Modbus/RS485 data to calculate and control the inverter in real time. Support equipment many operating hours, each time frame has its own pressure setpoint and fr

Monitoring and control equipment LoRa MEI is an industrial IoT solution for factories, pumping stations and technical infrastructure. Device uses power 220VAC, integrated 01 RS485 Modbus RTU, 04 Digital Input 0–24VDC and 10 Relay Output 220VAC to collect data, monitor status and control devices remotely. Technology LoRa Allows long-distance communication, reduces wiring costs and is easy to deploy on a large scale. Connect to the platform MEI Eco Web/App, the device supports real-time monitoring

The MEI Chlorine mass monitoring and weighing system is an IoT solution used STM32 to continuously monitor the weight of chlorine cylinders using Loadcell, helps determine the amount of chlorine consumed and warns when the chemical is running out. The system integrates additional sensors temperature, humidity, drying temperature and chlorine gas leak sensor, displays data directly on the screen HMI and transmitted to the platform MEI ECO via protocol MQTT. User-configurable alert,receive thresho

Data Logger monitors flow and pressure as a device Industrial IoT okay MEI Group designs specifically according to HUEWACO's requirements, using microcontroller STM32 to monitor the water supply network. The device supports reading flow rate Pulse or RS485 Modbus RTU, pressure measurement 4–20 mA, connect 4G LTE and transmit data to the platform MEI ECO qua MQTT. Support system Continuous Mode, Low Power Mode, Offline Data Logging, automatically synchronize data when there is a network, configur

The system monitors temperature and pH through LoRa MEI is the solution IoT uses STM32, allowing data to be collected from multiple LoRa Sensor Node and transmitted LoRa Master Gateway. Gateway displays data on the screen, while connecting Ethernet (LAN) or Wi-Fi to transmit data to the platform MEI ECO via protocol MQTT. The system supports sensor connection RS485 Modbus RTU, 4–20 mA or Analog, set alarm threshold and send Push Notification when the parameter exceeds the limit. Both Sensor Node

MEI Integrated Gateway is the industrial Gateway set MEI Group research and development, use of resources 12 VDC, integrated 4G LTE, LAN, Wi-Fi and LoRa to collect and transmit data within the ecosystem MEI IoT. Equipment is equipped 01 RS485/Modbus RTU port, 02 Digital Input channels (0–24 VDC), 01 Digital Output channel and sensors temperature, humidity inside to monitor operating status. Gateway supports saving data when connection is lost, automatically synchronizing when the network is rest

The MEI temperature and humidity monitoring system is an IoT solution that uses sensors SHT30 and controller STM32 to monitor environmental conditions in real time. Devices that support connection Wi-Fi or Ethernet (LAN), display temperature and humidity above 7-segment LED and Web/App platform. The system allows configuration of alarm thresholds, local horn activation and sending Push Notification when parameters exceed limits or the device has a problem. Data is stored offline when connection

MEI GROUP's flow measurement equipment set is a low-cost water monitoring solution that uses turbine/Hall sensors to measure pulses and calculate instantaneous flow rate and totalized volume with enough accuracy for residential and light industrial applications. The sensor gives pulse signals according to the water flow speed, the internal datalogger device will process, filter noise and convert to L/min, m³/h and total m³ values. The device integrates an industrial processor, supports 1–2 pulse

MEI GROUP CT.003 is a fire alarm signal receiver using LoRa technology, allowing real-time monitoring of system status on the Web and App. The device supports instant alerts when problems occur, stores operation history and remotely monitors connection status. Compact industrial design, installed directly in electrical cabinets or fire alarm cabinets, suitable for factories, buildings, warehouses and commercial centers.

MEI Group's 4G connected adverse pressure point monitor is a specialized monitoring device for water supply systems, designed to measure pressure at locations far from pumping stations or at points at risk of low or high pressure. The device uses a 4–20mA or 0–10V pressure sensor, high resolution, to help continuously monitor pressure and send instant warnings when detecting pressure drops, pressure shocks or abnormal fluctuations on the pipeline. In addition to pressure, the device also measures

System Data Logger monitors MEI Use microcontroller STM32F4, integrated 08 Analog Input channels 4–20 mA, 04 Pulse Counter channels and extended support LoRa to collect data from multiple measurement points. Connected devices 4G LTE, transmit data to the platform MEI ECO via protocol MQTT, support Continuous Mode and Low Power Mode. Built-in memory enabled save data offline for up to 120 days with cycle 15 minutes/time, automatically syncs when the connection is restored. Users can remotely conf

MEI pressure monitoring system is the kit Data Logger IoT Use microcontroller STM32, power supply 9–12VDC, supports pressure sensor connection 4–20 mA for continuous monitoring of water supply systems, pumping stations and industrial pipelines. Data is displayed on the screen, transmitted to the platform MEI ECO through protocol MQTT and supports two operating modes: Continuous Mode and Low Power Mode. Integrated equipment Offline Data Logging, automatically synchronizes data when the connection

The MEI Datalogger device monitors the wastewater treatment system, collecting data from sensors via RS485 (Modbus RTU), pulse input and 4–20mA analog signals such as pH, COD, TSS, DO, flow, water level. The device is capable of controlling the sampler automatically by time or flow, and recording full event logs. Data is stored in parallel online and offline, automatically sent compensation when there is a network outage and safely backed up when there is a power outage. The system connects to th

MEI's temperature and humidity monitoring device is an industrial IoT solution connected to WiFi, transmitting data directly to the platform. MEI Eco Web App for centralized monitoring and management. The device accurately measures environmental temperature and humidity, suitable for installation in factories, cold storages, server rooms, agricultural greenhouses and technical electrical cabinets. Data is updated in real time, displayed on an intuitive dashboard with hourly, daily, and monthly ch

Ministry Industrial IoT Gateway do MEI Group research and development, use the platform Raspberry Pi 5 (RAM 8 GB) Integrated display screen, meets real-time data collection, processing and transmission requirements. Communication support devices RS485/Modbus RTU, entrance 4–20 mA, 0–10 V, xung, Digital I/O, same connection Ethernet, Wi-Fi or 4G. Gateway has the ability to store data when connection is lost and automatically synchronize to the server when the network is restored, and supports rem

Power supply: 12 VDC (optional range 9 – 24 VDC). Consumption stream: < 100 mA (active state). Current input: 2 channels 4–20 mA independent isolation. Resolution: 16 bit ADC. M-Bus input (RS-485): Protocol: Modbus RTU (Slave/Host depending on configuration). Baud rate: 2 400 – 115 200 bps. Transmission Type: Half-duplex, standard RS-485 industrial. Digital Input: 2 independent pulse channels, supports rising edge counting. Input voltage: 0–24 VDC, opto-isolated. Maximum frequency: 1 kHz. Operating temperatu

MEI productivity counting and line incident monitoring system is a set IoT Data Logger Use microcontroller STM32, connection support Digital Input, Encoder, optical sensor, Loadcell and RS485 Modbus RTU to collect real-time production data. The device calculates output, machine run/down time, production cycle and detects problems such as machine stoppage, product jam or sensor signal loss. Data is transmitted to the platform MEI ECO qua Ethernet (LAN), Wi-Fi or 4G LTE use protocol MQTT. Support

❏ Power supply 220V ❏ Operating temperature 5° C - 70° C ❏ Communications WIFI/Ethernet ❏ Power consumption 2.5W ❏ Size 7cm x 15cm ❏ Weight 0.1kg - Monitor dust parameters, light intensity, temperature and humidity - Display parameters on TFT screen - Connect to the control software via the internet using wifi/ethernet

❏ Power supply 220V ❏ Operating temperature 5° C - 70° C ❏ Communications WIFI/Ethernet ❏ Power consumption 2.5W ❏ Size 7cm x 15cm ❏ Weight 0.1kg - Control the opening and closing of the magnetic latch through an intermediate relay - Emergency opening and closing button - Connect to the control software via the internet using wifi/ethernet

1. General introduction Solution MEI Group Provide monitoring system Remote temperature and humidity application LoRa E32 technology Super energy saving. Each sensor node works by rechargeable battery, transmit data over...

The MEI pressure monitoring and regulation system is the solution IoT Use microcontroller STM32, specializes in monitoring pressure and flow in water supply networks, and automatically controls pressure regulating valves to maintain stable pressure and reduce water loss. The device supports pressure sensor connection 4–20 mA, flow meter RS485 Modbus RTU and transmit data directly to the platform MEI ECO qua 4G LTE use protocol MQTT. The system operates by Solar energy combined with rechargeable

MEI dust monitoring system is the kit IoT Data Logger Use microcontroller STM32, supports dust sensor connection PM1.0, PM2.5, PM10 qua UART or RS485 Modbus RTU to monitor air quality in factories and outdoors. Connected devices 4G LTE, Wi-Fi or Ethernet (LAN), transmit data to the platform MEI ECO via protocol MQTT. Support system Continuous Mode and Low Power Mode, integrated Offline Data Logging, automatically synchronizes data when connection is restored and supported Remote firmware update

MEI IoT Demo System is an application demonstration platform Industrial IoT Use microcontroller STM32, integrated Digital I/O, Analog Input and RS485 Modbus RTU to connect sensors and peripherals. Data is processed in real time, displayed above HMI screen and transmit to the platform MEI ECO passed Ethernet (LAN), Wi-Fi or 4G LTE use protocol MQTT. Users can monitor sensor status, turn lights on/off, control Relay from HMI or Web/App. Support equipment Offline Data Logging,automatically synchron

ATS MEI cabinet monitoring system is a kit IoT Data Logger Use microcontroller STM32 and connection 4G LTE to monitor temperature, humidity and cabinet door opening/closing status in real time. Support equipment Continuous Mode and Low Power Mode, instantly detects when the cabinet door is open using a magnetic sensor, and monitors temperature, humidity and sends Push Notification when parameters exceed thresholds or problems arise. Integrated system Offline Data Logging, automatically synchroni

MEI smart lighting cabinet system is an IoT solution that helps centrally monitor and control the lighting system via Web and Mobile platforms. The system allows turning on/off, adjusting the brightness of each light or each line via the LoRa network, setting up automatic operating scenarios over time, and monitoring voltage, current, power and energy consumption. Incidents such as overload, lost connection or faulty equipment are alerted immediately. In addition, the system supports displaying

MEI GROUP's smart fire alarm equipment is a specialized IoT solution for factories, warehouses and buildings, meeting the requirements of continuous safety monitoring and centralized management. Equipment used LAN connection as main channel to ensure stable data transmission. When a LAN or system failure occurs automatically switch to 4G, maintains an uninterrupted connection with MEI's monitoring center and web app platform. The device connects directly to the Smoke detector, heat detector, fire

MEI ECO 10-channel controller is a smart remote control solution using the STM32 platform, supporting LoRa or WiFi connection. The device integrates 10 independent relay/MOSFET channels to control pumps, solenoid valves, fans, lights and industrial equipment. Supports manual control, timer, automatic scenario and sensor linkage. Status data, voltage, load current, temperature and alarms are monitored in real time on the MEI ECO Web/App. The device has OTA, watchdog, anti-EMI interference and 24/

MEI pump performance analysis system allows to evaluate the relationship between flow (Q) and pressure/water column (H) during the actual operation of the pumping station. The device collects data from flow sensors (pulse, M-Bus, Modbus) and 4–20mA/LoRa pressure sensors, then automatically “counts samples”, filters noise and creates data groups that accurately reflect the pump characteristic curve according to each operating condition. Automated construction system Q–H characteristic curve, displ

MEI smart weather monitoring system is the solution IoT uses STM32, connect 4G LTE and solar energy to monitor environmental parameters in real time. The device supports sensor connection RS485 Modbus RTU or 4–20 mA such as wind speed, wind direction, rainfall, light intensity, temperature and humidity. Data is transmitted to the platform MEI ECO via protocol MQTT, store offline when connection is lost and automatically sync when network is available. The system supports configuring alert and se

The ESP32 IoT LAN device is an integrated, industrial control and data acquisition suite 08 Digital Input 24VDC, 01 RS485 Modbus RTU port, 01 control relay, 01 alarm contact (Alarm Contact) and Real-time RTC. Devices that support connection LAN Ethernet and LoRa 3–8 km, allows monitoring and collecting data from sensors, PLCs, electricity meters, flow, pressure... Data is transmitted to Cloud, SCADA or Web/App for remote monitoring, warning and control. Suitable for problems of incident warning,

MEI Group's factory output monitoring system uses LoRa IoT technology to collect, transmit and display real-time production data. The terminal devices record output, machine status and send data to the central Gateway via long-range LoRa connection. Data is displayed directly on the industrial LED panel, and synchronized to the MEI ECO Cloud, Web and App platforms. The system supports incident warnings, data storage in case of network outage and analysis of production performance, helping to imp

MEI devices are solutions for collecting and monitoring medical machine data through communication RS485, allowing to read operating parameters and transmit data to the Web/App platform in real time. The system visually displays measured values, trend charts of each parameter and stores history for lookup and analysis. Users can configure individual warning thresholds for each value, enable/disable the warning function, and set up a list of phone numbers to receive warnings via SMS or calls when

The smart agricultural weather monitor collects data on temperature, air humidity, precipitation, wind speed and direction, soil moisture, EC and NPK. The device supports RS485 Modbus, 4G, LAN, WiFi and LoRa, stores data locally when connection is lost and automatically synchronizes when the network recovers. Monitoring system via Web/App, displaying charts, reports, setting alarm thresholds and sending notifications via App, SMS or Email in real time.

MEI smart weight weighing system is an IoT solution used STM32 and Loadcell to monitor the weight of tanks, nutrient tanks or silos in smart irrigation systems. Devices that support connection 4G LTE, Wi-Fi or LoRa, transmit data to the platform MEI ECO via protocol MQTT, allowing remote monitoring and control of pumps and valves on the Web/App. Integrated system Offline Data Logging, automatically synchronize data when the connection is restored, support setting high, low or overload alarm thre

MEI urban lighting equipment is a controller and monitor for street light cabinets using an independent 4G connection, fully integrated with the MEI Eco ecosystem. The solution allows centralized management of many light cabinets on web and app platforms, suitable for deployment on roads, residential areas, industrial parks and smart cities. The device supports independent control of 2 lighting lines, each line can be turned on/off separately to optimize energy saving. Operating modes include: ma

Level 1 pumping station monitoring and control equipment of MEI GROUP is a smart controller for raw water exploitation pumping stations, well pumping stations and upstream water supply systems. The device allows simultaneous control priming pump, submersible pump, drain pump following an automated process, ensuring safe and continuous operation. The device collects data from well water level sensors, pressure sensors, flow sensors, motor temperature and electrical cabinet status. Based on this da

The MEI central controller is designed for industrial monitoring and control applications, water infrastructure, pumping stations and environmental monitoring. The device uses high-performance STM32F407 microcontroller, supporting RS485 connection, Ethernet, digital input, control relay and field sensor. Integrated data storage, real-time clock, remote program update (OTA) and Watchdog anti-crash mechanism. The solution allows data collection, status monitoring and remote device control via Web/

IoT Gateway MEI GROUP is a central data collection and transmission device for the factory, supporting connectivity LAN Ethernet combined with the network LoRa UART to build a distributed monitoring system without pulling long RS485 wires. Gateway uses ESP32 dual-core 240MHz, operates stably 24/7 and integrates WiFi/LAN for SCADA, MES or internal server connection via MQTT/MQTTS, HTTP/HTTPS or WebSocket. Support equipment M-Bus/RS485 Modbus RTU to read electronic water meters, industrial sensors