Feature: 1. MAIN USAGES: The detector is used to measure ORP and temperature, suitable for water purification application, Ionizer, chlorine monitoring and environmental testing, etc.    2. AUTO CALIBRATION: With digital calibration button, automatic range calibration with digital trimming ensures high measurement accuracy, which is efficient and reliable.    3. GOOD PROTECTION: The digital ORP detector housing is made of excellent ABS material, with IP67 waterproof rating, which can be used in more testing environments.    4. MULTIPLE FUNCTION: With automatic shutdown function, data hold function and low battery indicator, large and clear LCD screen displays both ORP and temperature readings.    5. OTHER PARTS: The digital hydrogen meter has a compact size for easy handling, with replaceable glass sensor and reference tube electrodes, convenient and durable.       Specification:            Item Type: ORP TEMP Detector ORP Range: -999 to +1000 mV Temperature Range: 0-55& 8451;; 32-130& 8457; Resolution: 1mV Temperature Resolution: 0.1& 8451; (0.1& 8457;) Accuracy: ORP: ±2%, Temperature: ±2% Calibration: Digital calibration via button. Electrodes: Replaceable glass sensor and reference tube electrodes Housing: IP67 waterproof (submersible; float) Battery: 2 x AAA Battery (not included) Material: ABS Weight: Approx. 150g / 5.3oz Uses: Suitable for all ORP tests including antioxidant measurements, water purification applications, ionizers, agriculture, aquarium and aquaculture, chlorine monitoring, cooling tower disinfection, environmental testing, fruit and vegetable washing, hydroponics, metal finishing, ozone system monitoring, pharmaceutical and applications, swimming pools and spas, pulp bleaching, vineyards and wineries, and water treatment                Package List:    1 x Detector (Battery Not Included)    2 x User Manual    1 x Lanyard    2 x Sandpapers