The PH-217 wall-mounted digital online water quality monitor delivers long-term 24-hour continuous water monitoring, simultaneously testing pH, EC, TDS and water temperature with built-in ATC automatic temperature compensation to eliminate reading errors caused by liquid temperature changes.

Equipped with triple independent LCD screens, it displays all real-time water parameters clearly at a glance. The detachable long-line BNC probe can be fully immersed in water for permanent monitoring, and the separate replaceable sensor effectively cuts maintenance costs.

One-key automatic calibration simplifies operation for beginners, and the compact wall-mounted design saves installation space. It is widely suitable for saltwater aquariums, hydroponic planting, aquaculture farms, swimming pools and small water treatment equipment, an essential intelligent device for stable daily water quality supervision.