Descriptions: _x000D_ The product adopts industrial-grade chip and high precision temperature and humidity probe to ensure the excellent reliability, high precision and interchangeability of the products. RS485 hardware interface (with lightning protection design), the protocol layer compatibility standard industry Rtu protocol. _x000D_ _x000D_ _x000D_ Features: _x000D_ The product adopts industrial-grade chip and high precision temperature and humidity probe to ensure the excellent reliability, high precision and interchangeability of the products. _x000D_ _x000D_ Adopted of RS485 hardware interface (with lightning protection design), the protocol layer compatibility standard industry Rtu protocol. _x000D_ Automatic output, connection RS485 through serial debugging tool will automatically output temperature and humidity. _x000D_ This sensor 's working voltage is 9-36v, maximum power is 0.3W. _x000D_ Relatively wide operating temperature and humidity, and features high accuracy temperature 0.3 (25 ), humidity 3% RH (25 )._x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Working voltage: 9-36V_x000D_ Maximum power: 0.3W_x000D_ Operating temperature: -20 ~60 , humidity 0% RH~80% RH_x000D_ Accuracy: Temperature 0.3 (25 ), humidity 3% RH (25 )_x000D_ Output interface: RS485 (standard Rtu protocol)_x000D_ Device address: can be set to 1-255, the default is 1_x000D_ Baud rate: 9600, 8 bits of data, 1 stop, no parity_x000D_ Size: as the picture _x000D_ Weight: 49g_x000D_ _x000D_ _x000D_ _x000D_ Wiring instructions: _x000D_ Yellow: power supply"+" _x000D_ Black: power supply "-" _x000D_ Red: 485-A _x000D_ Green: 485-B _x000D_ _x000D_ _x000D_ Package Included: _x000D_ 1 x RS485 Temperature and Humidity Transmitter Sensor