ITEM NAME:W2810 Single Way 12V Digital Dual Display Temperature Control Module Relay Product Description Description: Specifications: Display unit: Celsius Working voltage: DC 12V(5V/24V over 100pcs can be customized) Temperature control range: -50  °C-120  °C Measurement accuracy: 0.1  ° C Data lock: yes Relay: 20A Sensor: NTC waterproof sensor Specification size: 48mm*29mm*22mm/1.89*1.14*0.87" Opening size: 46mm*26.5mm/1.81*1.04" Code Explanation Setting range Factory setting P0 heating/cooling H/C C P1 Return difference 0.1-30℃ 2℃ P2 Maximum setting limit 120℃ 120℃ P3 Minimum setting limit -50℃ -50℃ P4 Temperature correction -10℃~10℃ 0℃ P5 Delay start 0-10min 0 P6 High-temperature Alarm 120℃ OFF P7 Data lock ON/OFF OFF P8 Factory Reset ON/OFF OFF Included: 1 x Digital Dual Display Temperature Control Module.Relay: 20A. Data lock: yes. P2 Maximum setting limit 120℃ 120℃. P3 Minimum setting limit -50℃ -50℃. P7 Data lock ON/OFF OFF. Opening size: 46mm 26.5mm/1.81 1.04". P4 Temperature correction -10℃~10℃ 0℃.