PH990 wall-mounted online pH monitor provides continuous real-time water pH detection, ideal for aquariums, hydroponic systems and small aquaculture water environment monitoring. Equipped with high-precision titanium alloy pH electrode, this pH tester delivers stable, accurate pH readings for long-term underwater immersion.

Featuring a large HD backlit LCD screen, the digital pH monitor displays clear pH values visible from all viewing angles, with a HOLD button to lock readings for easy recording. The BNC torsion-lock connector enables quick electrode installation and guarantees long service durability.

Simple one-point calibration design via the PH7 adjustment knob lets users calibrate the meter effortlessly with standard buffer solution. Compact wall-mounted structure saves space for permanent installation, perfect for daily long-term water quality online monitoring. Lightweight, plug-and-play design lowers operation threshold for all water testing scenarios.