4ch DC 12V 24V -40~500 Celsius PT100 RTD RS485 Temperature Sensor Module Modbus RTU Platinum Thermal Resistance Collector (1PCS A 12V Only Board)

$16.99
by Eletechsup

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MODBUS RTU protocol, 03 read command, 06/16 write command. By modifying the 485 address, up to 247 modules can be cascaded (more than 16 please use R485 repeater)

Product Name:

4ch DC 12V 24V -40~500 Celsius PT100 RTD RS485 Temperature Sensor Module Modbus RTU Platinum Thermal Resistance Collector


Packing list(Please select the product you need):

1 pcs PTA8C04 4ch PT100 RS485 Acquisition module


Description :

PTA9B01 PT100 RS485 Acquisition module Description:

Working voltage: DC 12V/24V

Working current: 14-18MA

MODBUS RTU protocol, 03 read command, 06/16 write command.

Serial port baud rate: 9600 (default), N, 8, 1

By modifying the 485 address, up to 247 modules can be cascaded (more than 16 please use R485 repeater)

Can read temperature and PT100 resistance value

Adapted sensor: PT100 3-wire or 2-wire sensor


Temperature measurement range:

A version -40℃ to +220℃

B version -40℃ to +500℃

. It is recommended to select a version with a smaller range within the range that meets the measurement.

Temperature measurement accuracy: 1%.

Size: 93 X 87 X 41MM

Weight: 122g


MODBUS RTU protocol please refer to : '' PTA8C04 4CH PT100 RS485 sensor protocol ''


PT100 sensor specifications:

Type: PT100

Probe Diameter: 6.5mm

Probe Length: 30mm

Probe Material : Stainless steel

Cable Length: 0.5M

PTFE sheath 3-Wire type

Temperature -200~550°C degree

DIN rail Box parameters:

Product model: UM72

Color: Green

Width: suitable for PCB board width UM72(72mm)

Insulation grade: flame-retardant VO grade

Backplane length: suitable for 90 mm PCB boards

Net weight: 99g

Installation: DIN35 and C45 rail


For more information, please contact us!!!


Typical application:

Thermostatic Controls

Industrial Systems

Consumer Products

Thermally Sensitive Systems

Measuring instruments

Indoor and outdoor temperature measurement

Temperature in vegetable garden

Weather forecasting, and monitoring

Temperature in Computer Room

Warehouse temperature


3-wire probe wiring mode: the red wire is connected to P+, and the other two wires of the same color are connected to P- and GND (the ports are not distinguished).


2-wire probe wiring mode: red wire connects to P+, blue wire connects to P- and G.

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