Trolmaster Heavy-Duty Inline Nutrient EC/Temp Sensor(PCT-3) TrolMaster's new PCT-3 EC & temperature probe has been improved in several ways. The new PCT-3 features a reduced-diameter protective sleeve and threaded body that will allow the probe to be installed into standard 3/4" PVC tee fittings. The PCT-3 also has an improved sensor element for more stable and reliable performance and we have reduced the length of the probe to fit into tight spaces. Can be used with the AMP-2 or the AMP-3 nutrient sensor module. Features Suitable for a wide range of applications: Hydroponics, Aquariums, Laboratory etc. 3.6-meter-long cable for flexible placement Mini DIN terminal allows direct connection to AMP-2 and 3 Sensor Board Drop-in/in-line compatible Package Contents 1x Reservoir/ Inline EC & Temp Nutrient Sensor Specification Working Environments: Temperature 32-122degF, Humidity<90%