1.Description:
   XY-MD04 is a temperature humidity sensor probe made of metal material with built-in SHT40 sensor. By using the RS485 interface and MODBUS communication protocol, the measured temperature and parameter values are read through instructions.

2.Features:
  1>.RS485 communication interface
  2>.MODBUS communication protocol
  3>.Custom Control Instructions
  4>.Metal waterproof probe
  5>.Built-in EMC anti-interference
  6>.Reverse polarity protection
  7>.Low power consumption, high accuracy
  8>.Temperature and humidity can be calibrated

3.Parameters:
  1>.Working Voltage:DC 5V-28V
  2>.Work Power:0.05W(Max)
  3>.Built-in Sensor:SHT40
  4>.Tested Temperature Range:-40℃~120℃
  5>.Temperature Control Precision:+/-0.3℃
  6>.Temperature Resolution:0.1℃
  7>.Tested Humidity Range:0%RH~100%RH
  8>.Humidity Control Precision:3%RH
  9>.Humidity Resolution:0.1%RH
  10>.Communication Interface:RS485
  11>.Communication Protocol: MODBUS-RTU
  12>.Output Refresh Speed: 0.5s
  13>.Probe Size:55*15*15mm
  14>.Wire Length:100cm

4.Wire Interface:
  1>.Red wire: VCC. Connect to power positive pole.
  2>.Black: GND. Connect to power negative pole.
  3>.Yellow: RS485-A. Data cable.
  4>.White: RS485-B. Data cable.

5.Application:
  1>.Greenhouse greenhouse
  2>.Storage
  3>.Communication control room
  4>.Intelligent office building
  5>.Laboratory

6. MODBUS-RTU Protocol Instruction: