7 in 1 Tuya Zigbee Intelligent Chlorin Meter Pool Water Quality Tester PH ORP To

ORP test range: -999mv ~ + 999mv. Supports monthly, weekly, weekly, and as many visualizations of your history as you see it. 【Main Application 】 : Used in swimming pool, aquaculture, aquarium, modern agriculture, drinking water treat, river water quality testing, etc.

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