iot and smart cities of Search

is a signal quality tester based on the standard LoRaWAN protocol, equipped with GPS positioning capabilities. It is primarily used to test the LoRa network signal strength at construction sites. It can test the packet loss rate for both uplink and downlink, as well as the Received Signal Strength Indicator (RSSI) and Signal-to-Noise Ratio (SNR), thereby facilitating the analysis and assessment of the LoRa network signal coverage at construction sites

The LoRaWAN Solenoid Valve Controller, features dual solenoid valve interfaces and employs LoRaWAN network communication for the operation of solenoid valve switches. 

Measures active energy, voltage, current, active power, power factor, and grid frequency (optional: reactive energy and reactive power). Shows active energy consumption with a clear digital screen. Pulse LED: Indicates energy metering pulses. Power LED: Shows power supply status. Supports wired RS485 networks for remote meter reading and centralized management. Compatible with MODBUS-RTU or DLT645 protocols. Configurable with LoRaWAN/NB-IoT/4G/WiFi modules for flexible IoT connectivity.