Modbus protocol wall mounted temperature and humidity transmitter LED display screen digital board

Product Introduction:

This product is an industrial temperature and humidity display screen, wall mounted, and can choose integrated or split type probes to real-time collect and display environmental temperature and humidity parameters. It also has RS485 communication and relay contact interfaces, which can be used with alarms/relays.

Applicable locations: laboratories, warehouses, workshops, computer rooms, factories.

Specification Parameters:

Product Size

Interface Description

Large Screen Button Description

485 Communication Protocol and Data Format

Register Address

Parameter Reading

Example: Reading Sensor Temperature and Humidity with Device Address 01

Comment:
Convert the returned hexadecimal data to decimal and divide by 10 to obtain the corresponding temperature and humidity values.
Temperature: 0x00FA (HEX)=250 (DEX), divided by 10 to obtain 25.0 ℃;
Humidity: 0x0190 (HEX)=400 (DEX), divided by 10 to obtain 40.0% RH.
Note: When the temperature is below 0 ℃, upload in the form of a complement code, assuming the read temperature is FF9B.
H (hexadecimal)=1111 1111 1001 1011 (binary), then the actual temperature value is 1000 0000 0110 0101
(binary)=0065 (hexadecimal)=-101 (decimal)=>Temperature=-10.1 ℃.