Features: This product is an upgraded version of the W1308. Added conversion function in Celsius and Fahrenheit Fully sealed, waterproof and safer Application: Fridge freezer ,display cabinets temperature control, plastic greenhouse, Incubator,Medical equipment, pet house, planting and breeding industry, electrical control cabinet cooling, ventilation containers, reptiles insulation, EPS incubator, sauna, PC cases, civil and industrial equipment Easy and convenient to use Specifications: Temperature control range: -50 ~ 120 C Measurement Accuracy: 0.1 C Control accuracy: 0.1 C Hysteresis accuracy: 0.1 C Refresh rate: 0.5 S Input Power: AC 110V~220V Measuring inputs: NTC (10K 0.5%) Waterproof sensor 0.5M Output: 1 Channel relay output, capacity = 10A Environmental requirements: -10 ~ 60 Humidity 20% -85% Size: 10*4.8*2.5cm Work light: Red Package include: 1 x Temperature Control Switch ------------------------------------------ USER GUIDE Celsius and Fahrenheit switching Press and hold the C/F button for three seconds, the C mode is changed to the F mode, the corresponding indicator light is on, and then the C/F button is pressed for three seconds. The F mode is changed to the C mode, the corresponding indicator light is on, and the power off function is saved. . Quick Setup 1.Determine the mode Press and hold SET for about 5 seconds to display P0, press SET again to display the mode. Press +- switch mode, H is heating mode, C is cooling mode 2. Set the return difference: The hysteresis is also how much the fall back after the set temperature stops. The default is 2 If you need to modify, please press and hold SET and let go for about 5 seconds to display P0, press +- to switch P1, press ST again to display the difference, press +- to set the difference back. 3. Set the temperature: After setting the mode and hysteresis, press ENT to confirm the return. At this time, the screen displays the real-time temperature. Press SET screen once and press +- to set the desired temperature. Code table P0: working mode (range: H/C) (default: C) P1: Hysteresis setting (range: 0.1-30) (default: 2.0) P2: Setting limit is high (range: +120) (default: 120) P3: Low setting limit (range: -55) (default: -55) P4: Temperature correction (range: +10~-10) (default: 0) P5: Delayed start (range 0-10 minutes) (default: 0) P6: High temperature alarm (-55~120) (default: off) P7: Data lock (on~off) (default: off) P8: Restore factory settings (on~off) (default: off) In the off state, press and hold the up and down keys to quickly restore the factory settings.