S281 is wireless data ,wireless temperature and humidity acquisition &alarm; system. It is based on LoRa radio, mainly used for multi-point and long-distance distributed temperature and humidity acquisition and transparent transmission from equipment to cloud platform. LoRa modulation technology is adopted to realize on-site distributed multi-point IO equipment monitoring and temperature &humidity; collection. Communication distance can be up to 1km.Built-in LoRa SX1278 chip, GSM/GPRS/3G/4G/RJ45 module, S281 can transfer sensor, PLC, smart meter and other data via wireless RF,and then through SMS/2G/3G/4G/Ethernet Send it to the cloud platform or mobile phone to realize remote monitoring and control, and solve the problem of on-site wiring. This system includes LoRa gateway and LoRa slave device.LoRa slave devices connect sensors,PLC and other devices,and transfer data to cloud,phone App via RF.It realizes the dual communication between cloud and PLC or other devices.When slave device acquires temperature&humidity; data,alarm values can be set by gateway to realize SMS alarm.
