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) 1、Adopted of high quality electronic components, and accuracy process, ensure for the durability 2、The sensor is programmable and can be remote control 3、Large temperature measurement range with high accuracy 4、Wide range of applications 5、Small body with stable performance, easy to install and remove 1 x Sensor