1.LED temperature display: -19.9-70 (-3.82-158) 2.Temperature unit can be switched: C/F Default display unit: temperature [] 3. LED digital display on/off function 4. RGB atmosphere light color display: RGB overall change RGB changes from right to left 7-color cycle blue light blue green yellow red white 5. Atmosphere light countdown off function: set time: always on 60 120 180 240 360 minutes Wireless transmission distance: open distance is 100 meters Protection level: IP68 Built-in 2200mAh battery Solar charging panel size: 3.0 inches Screen size: 1.57 inches Waterproof TPYE-C charging port Child lock function Charging method: solar 3.5-5.5V/TPYE-C charging Body material: ABS Receiver: 1. Backlight: Short any button to turn on the backlight for 10 seconds, USB to DC power cable to power on the backlight 2. Indoor temperature display: range -19.9-60 (-3.82-140) 3. Indoor humidity display: range 10%-90% 4. Outdoor temperature display: range -19.9-70 (-3.82-158) 5. Temperature unit can be switched: C/F Default display unit: temperature [] 6. Pool water level comfort display: COLD is displayed when the temperature is below 25, COMFORT is displayed when the temperature is between 25-29.9, and HOT is displayed when the temperature is above 29 7. Record the MAX/MIN value of the transmitter temperature on the day, and the display record is the value within 24 hours from power on. 8. Transmitter and receiver low battery indication function 9. Screen size: 2.44 inches 10. Body material: ABS 11. Power supply: 2*AAA batteries/DC power cord (Not included batteries) Color: White Material: plastic Package Contents: 1 * Receiver 1 * Pool Thermometer 1 Set * Accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.