RS485 Modbus Water Proof Temperature Humidity Sensor Probe

 

RS485 Modbus Water Proof Temperature Humidity Sensor Probe

Basic feature

• Power: DC5V~DC24V

• Temperature Measuring Range : -30℃~80℃

• Humidity Measuring Range: 0～100%RH

• Measuring Precision：

• Temperature：±0.5℃ (resolution: 0.1℃) / Humidity：±5%rh (resolution: 0.1 rh)

• Output: RS485 (Protocol MODBUS RTU)

• Consumption ＜0.1W

• RS485 Communication distance: up to 800m

• default cable length: 0.5m (can customize length)

Options:

 

Size:

                                                                              

 

Packaging

Wiring

Cable color	Description
Brown	Power +(DC5-30V)
black	Power -
Yellow （or green）	RS485 A+
Blue	RS485 B-

RS485 communication Default
parameters: 4800,n,8,1

Default device address is 1

Modbus RTU protocol

E.g. master read temperature humidity:

Sensor responds:

Temperature calculates:

When temperature less than 0, value will be responded in complement 

Temperature: FF9F H= -97 => temperature= -9.7℃

Humidity: 1E6 H= 486 => humidity= 48.6%

Set slave ID

E.g., set slave ID=2, Master sends

Sensor responds:

Set baud rate

E.g., set baud rate to 9600, Master sends

Sensor responds:

Enquiry slave ID

Master sends

Sensor responds:

Provide config tool