Temperature Sensor Module Programmable Remote Control TTL Electronic Components Item Type: Temperature Sensor Module Supply Voltage: A/B 5V Version: DC 3.7-5.5V, C 12V Version: 6-25V Working Current: 5-8MA NO means no temperature sensor, TS means temperature sensor A indicates the 5v version of the TTL232 interface, B indicates the 5V version of the RS485 interface, and B indicates the 12V version of the RS485 interface. MODBUS RTU protocol, 03 read command, 06 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) adopt temperature and humidity sensor Temperature Measuring Range: -55℃ To +125℃(-67℉ To +257℉). Temperature: -10 ℃ To 85 ℃ with an accuracy of +-0.5℃. Size: A/B Version 30 x 15 x 3.5mm / 1.2 x 0.6 x 0.1in         C Version 30 x 15 x 6mm / 1.2 x 0.6 x 0.2in Weight: 1.4-1.9g / 0.05-0.07oz(without sensor)               1.9-2.2g / 0.07-0.08oz(with sensor)