The thermostat supports PT100 platinum resistance by default. If you need to use PT1000 platinum resistance, you need to change the reference resistance of the thermostat from 402 ohms (4020) to 402K ohms (4021), the accuracy is 0.1%, and the package is 0805.
The thermostat is compatible with 2-wire/3-wire/4-wire platinum resistance by default. The connection methods between them and the thermostat are different. You need to change the jumper cap on the thermostat to switch. For the specific wiring method, please refer to the appendix wiring.
To connect to a computer, a serial port module with USB to TTL level is required. Note that TX is connected to the serial port module and RXRX is connected to the serial port module.
After connecting with the USB to TL module. The serial port module is plugged into the USB port of the computer. Make sure to find the corresponding COM port after installing the driver of the serial port module. Open the serial port debugging software, set the baud rate to the default 115200 of the module (if the baud rate is higher, you need to select the current baud rate).
Select "Timestamp and sub-package display" as required. Finally, open the serial port and send the corresponding command according to the AT command table to complete a complete debugging process.

Temperature test range: -200°C to 60°C (depending on the temperature measurement performance of the platinum resistance)
Operating temperature range: -20°c to 80°
Resolution: 0.1
Accuracy Total accuracy: keep at 0.5 (0.05% of full scale) (depending on the matching platinum resistance temperature measurement accuracy)
Setting method: key/serial AT command
Command mode: AT command
Display mode: 0.36 inch digital tube displays 5 red
Working voltage: DC3.3-5v
Colour: black
Material: pvc
Size: 37x62x21mm