• Temperature input channel: 8 channels (DS18B20 temperature sensor)
• Temperature measurement range: -55~125 °C
• Temperature measurement accuracy: ±32.9 °F
• Temperature resolution: 32.2 °F
• Effective connection distance: ≤25m (ordinary line)
• Working temperature range: -20~70 °C
• External power supply: DC 9V~30V/2W
• Insulation protection: 1500VDC
• Installation method: standard DIN rail installation or screw installation
• Dimensions: 125×73×35mm

Interface definition:

• AVcc: External power input positive terminal
• AGnd: External power input negative terminal
• Vdd: +5V, connected to temperature sensor DS18B20 pin Vdd
• Data1: Connect to the first channel temperature sensor DS18B20 pin DQ
• Data2: Connect to the second temperature sensor DS18B20 pin DQ
• Gnd: 0V, connected to the temperature sensor DS18B20 pin Gnd
• Vdd: +5V, connected to the temperature sensor DS18B20 pin Vdd
• Data3: Connect to the third temperature sensor DS18B20 pin DQ
• Data4: Connect to the fourth temperature sensor DS18B20 pin DQ
• Gnd: 0V, connected to the temperature sensor DS18B20 pin Gnd
• Vdd: +5V, connected to temperature sensor DS18B20 pin Vdd
• Data5: Connect to DQ pin of 5th channel temperature sensor DS18B20
• Data6: Connect to 6th temperature sensor DS18B20 pin DQ
• Gnd: 0V, connected to temperature sensor DS18B20 pin Gnd
• Vdd: +5V, connected to temperature sensor DS18B20 pin Vdd
• Data7: Connect to pin DQ of 7th temperature sensor DS18B20
• Data8: Connect to 8th sensor DS18B20 temperature sensor DQ pin
• Gnd: 0V, connected to the temperature sensor DS18B20 pin Gnd
• 485A: RS485 signal A+
• 485B: RS485 signal B-