Photo 1 of Smart pH Controller, Dual Relay Digital pH Monitor with Dosing Pump & Dual Relay for pH Up , pH Meter with Temperature Compensation for Hydroponic System, Indoor Plant Grow, Aquarium

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Photo 1 of Smart pH Controller, Dual Relay Digital pH Monitor with Dosing Pump & Dual Relay for pH Up , pH Meter with Temperature Compensation for Hydroponic System, Indoor Plant Grow, AquariumPhoto 2 of Smart pH Controller, Dual Relay Digital pH Monitor with Dosing Pump & Dual Relay for pH Up , pH Meter with Temperature Compensation for Hydroponic System, Indoor Plant Grow, Aquarium