Trolmaster Reservoir pH Sensor(PPH-1) TrolMaster pH Probes are accurate and reliable for monitoring the pH level of water monitored by Aqua-x. The PPH-1 connects the Aqua-x to the PPH-1 via the AMP-2. All pH probes should be properly stored using the appropriate probe solution and storage cap. A pH probe that is completely dry will not function properly. A pH probe that is returned in an "uncapped" and "dry" condition will not qualify for warranty. Features It can be used in a variety of ways: hydroponics (plant growing), aquariums, laboratories, etc. 3.6-meter long cable for flexible placement. BNC connector allows for direct connection of AMP-2 Sensor Board. Packaging Materials 1 x Reservoir pH Sensor Specification Working Environments: Temperature 32-122degF, Humidity<90% Package Dimensions: (L) 275mm x (W) 85mm x (95)mm