Tuya WIFI 3 IN 1 PH/ORP/Temp Meter controller Water Quality Tester pH monitor Acidometer for Aquarium APP Control US/EU Plug    feature:    Tuya smart WIFI connection/real-time data transmission: Download the Tuya APP, you can view the current data and historical data on the mobile phone, and alarm when the data is abnormally high or low.   Real-time data transmission: You can view daily, weekly and monthly data to easily grasp the water quality.   APP alarm setting: set high or low alarm value, if it exceeds the set value, it will alarm. In the Tuya APP, choose to create a smart scene, set the safety range in the smart scene, and select the alarm method.   FUSE fuse protection: When the current is abnormal, the fuse will be blown when it reaches a certain height, and the entire circuit will be cut off to protect it.   Can detect at the same time: PH/ORP/Temp three values, LCD backlit display, clear reading, back hanging hole, can be hung on the wall for flexible use.   High-precision electrode/fast measurement: high precision, fast response, more stable data, long corrosion resistance, long service life, and simple maintenance.   Widely used: domestic water, fish tank, aquarium, swimming pool, aquaculture, laboratory, etc.     specification:   Model: PH-W2839   Power supply: US/EU (optional)   WiFi mobile APP connection: yes   APP real-time monitoring: yes   View daily, weekly, monthly data: yes   Measuring range PH: 0.00-14.00PH   ORP:-2000~+2000mV   TEMP: 0°-50°c (32°F-122°F)   Alarm setting range PH: 0.00-14.00PH   ORP: -2000~2000mV     Package Included:   Host*1   Controller*1   ORP electrode*1   PH electrode*1   Temperature electrode*1   Power plug*1