Pool Water Quality Monitor : Monitors PH, Chlorine, ORP, EC, TDS, Salt, And Temperature For Pools, Spas, And . Ideal For Homeowners, Hotels, And Pool . Smart WiFi Connectivity For Real-Time Monitoring : Connects Via 2.4GHz WiFi And Tuya App For Real-Time Alerts. View All Water Quality Data From Anywhere On Your Smartphone Or Tablet. Only Support WiFi - 2.4GHZ. Dual Solar And USB Charging Modes : Equipped With Efficient Solar Panel And USB Charging Port. Ensures Continuous Outdoor Operation Without Battery Replacements. Floating Waterproof Design For All Pool Types :Built To Float On Water With IP68 Waterproof Rating. Perfect For Saltwater Pools, Chlorinated Pools, , And . Ideal For Pool Owners, Maintenance Professionals, And Spa Enthusiasts, This Monitor Ensures Safe, Balanced Water Quality At All Times. Receive Instant Alerts When Parameters Exceed Set Limits. Supports Multi-User Access And WiFi Remote Control For Convenient Monitoring Anytime, Anywhere. APP Connection Note: The water quality tester must be paired with a gateway in order to be used, our link is delivered with 1 gateway. 1. Connect the power, and hold the "RESET" button for 5 seconds, the indicator light be on and the red light be flashing. 2. Open "Smart Life" app or "Tuya" app, click Add Device. 3. Select the gateway control.Multi-function Gateway (Zigbee) 4. Input the correct Wi-fi password 5. Confirm the indicator light is blinking, select fast blinking. 6. Search for devices. 7. Click Finish. 8. Click Add Sub-device. 9. and hold for 5 seconds to blink the indicator light. 10. Confirmation light is blinking fast. 11. Searching for devices. 12. Connection is successful. Specifications: Measurement Parameters:PH,,ORP,Salt,EC,TDS,Temperature PH Range:0.0-14.0 Range:0.0-4.0 Mg/L ORP Range:-999-999mV Salt Range:0-999ppm, 1000-9990ppm EC Range:0-2000μS/Cm; 2000-9990μS/Cm;10.01-19.99mS/Cm TDS Range:0-999ppm; 1000-9990ppm Temperature Range:0.0-50.0°C/32.0-122.0°F Resolution: PH:0.1pH :0.1mg/L ORP:1mV Salt:1ppm EC:1μS/Cm, 10μS/Cm, 0.01mS/Cm TDS:1ppm Temp:0.1°C/°F : PH:±0.1pH :±0.1mg/L Connectivity:Zigbee Gateway + WiFi Power Supply:Solar + USB Rechargeable Color:White & Yellow & Black Material:plastic Package Contents: 1 x Smart Pool Monitor 1 x Zigbee Gateway 1 x USB Charging Cable 1 x Screwdriver 4 x Calibration Solutions (PH4.00, PH7.00, PH10.01, ORP222mV) 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.