Electric Pool Thermostat Panel Touchscreen Digital Display Swimming Pool Heater Control Panel for Spa Bath Hot Tub 220V Item Type: Electric Swimming Pool Thermostat Panel Material: Plastic, Stainless Steel Size: Approx. 10 x 8cm / 3.9 x 3.1in Gross Weight: Approx. 449g / 15.8oz Voltage: 220V Power: 3-54KW Controller Button Functions: Up: Increase temperature setting key, press this key to increase the temperature setting by 1?? or 2��H Down: Decrease temperature setting key, press this key to decrease the temperature setting by 1?? or 2��H Switch Key: 1. Temperature Unit Switch: Press and hold the # key, the digital display alternates between displaying the temperature units ?? and ��H. When the desired temperature unit is displayed, release the key, and the selected temperature unit ?? or ��H will be displayed for 5 seconds. The digital display will then show the current temperature in the selected temperature unit. 2. Temperature Sensor Switch: Press the # key, the digital display flashes to show the temperature detected by sensor Rt2. After 5 seconds or by pressing the key again within 5 seconds, the digital display will show the current temperature detected by sensor Rt1.