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Port Description
1.3
Standard RJ45 ports marked RS485-IN and RS485-OUT are used to cascade
multiple T/H sensors. The pin definitions are the same.
Female connector
Pin
Definition
The NTC1-3 and NTC4-6 ports are standard RJ45 ports used for connecting
extended temperature sensors.
Pin
NTC1-3 Definition
NTC4-6 Definition
2
Installation Method
Wall-Mounted Installation
Wall-mounted installation: Screw the product base
to a wall, and secure the product to the base.
Magnetic Attachment
Magnetic attachment: Remove the product base, and attach the product firmly to the surface of a
metal object.
3
Display Description
T/H sensors have nixie tubes for displaying the temperature (°C by default), humidity, address,
and baud rate.
The temperature and humidity are displayed alternately.
The address and baud rate can be displayed alternately by pressing the button.
The default temperature value is Celsius temperature. Toggle switch 8 can be used to switch
the temperature unit. ON is for Fahrenheit and OFF is for Celsius.
Celsius
temperature
4
Communication Settings
The Modbus-RTU communication protocol is adopted.
Default settings: baud rate 9600 bps; 8 data bits; one stop bit; no parity check.
The RUN indicator blinks fast at 10 Hz during communication.
1
2
RS485+
RS485–
1
NTC1
NTC4
Hole dimensions
Fahrenheit
temperature
3
4
12 V DC
RS485+
2
3
4
GND
Reserved
NTC2
GND
Reserved
NTC5
Humidity
2
5
6
–
RS485–
5
6
7
GND
NTC3
GND
GND
NTC6
GND
Wall-mounted installation
Address
Baud rate
7
8
–
GND
8
GND
GND
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