Feature: 1. PH ORP TEMP Detector: This multifunctional water quality detector can be used to test the water pH, temperature and ORP (oxidation reduction potential). 2. Convenient Control: Through the relay output power socket, you can control the pH and ORP value according to your needs. 3. Good Performance: The pH temperature ORP detector has a wide measurement range and high accuracy, and is highly practical. 4. Replaceable Electrodes: PH and ORP electrodes are removable and replaceable, and the fuse can be replaced easily and quickly through external replacement. 5. Simple Calibration: Simply use a mini screwdriver and automatic temperature compensation to easily perform pH and ORP calibration. Specification: Item Type: Water Quality Monitoring Kit (Delivered with Liquid) Product Host Size: Approx. 16 x 9.5 x 4cm / 6.3 x 3.7 x 1.6in Weight: Approx. 1053g / 37.1oz Measuring Range: PH: 0.00-14.00PH ORP: 0-±1999MV TEMP: -50℃-70℃(-58℉-158℉) Resolution: PH: 0.01PH ORP: 1MV TEMP: 0.1℃(0.2℉) Accuracy: PH: ±0.1PH ORP: ±5MV TEMP: ±1.0℃(±2℉) Input Resistance: 10^12Ω Predetermined Area: PH: 3.50pH-10.50pH ORP: -500mV-500mV Working Temperature: 0℃-50℃ Relay Contact: 5A 250V AC Application: Suitable for water sources, soilless culture, aquariums, laboratories, hot springs, environmental water, swimming pools, water purification systems, etc.. Package List: 1 x Tester1 x Connection Line2 x Electrode3 x Accessories1 x User Manual