Handheld Water Quality Detector Probe Plug Type H2 Test Pen IP67 Waterproof YY‑400H Feature:1. MAIN PURPOSE: This water quality detector is portable design, can display hydrogen and temperature range, convenient and practical.2. WIDE APPLICATION: Can be used for water electrolysis machine, hydrogen enrichment and pot effect test, and laboratory hydrogen water measurement.3. PROBE TYPE: The water quality detector adopts high sensitivity electrode, probe insertion type design, detachable and replaceable.4. GOOD PERFORMANCE: This portable test pen has high accuracy, IP67 waterproof, supports backlight display and temperature compensation.5. EASY OPERATION: After turning on the device, put the electrode of the device in the water to start the detection, which is convenient for the operator. Specification:Item Type: Water Quality DetectorModel: YY-400HMaterial: ABSBattery: 1.5V LR44 x 3 (not included)Uses: Drinking water testing, water electrolysis machines, hydrogen rich water cups, hydrogen rich pots, etc. effect testing and data measurement in laboratory research on hydrogen waterH2:Range: 0-2400ppb; 0.00-2.400ppmResolution: 2ppb; 0.002ppmAccuracy: ±10ppb; ±0.01ppmTemperature:Range: 0.1℃-60.0℃; 32.0℉-140.0℉Resolution: 0.1℃; 0.1℉Accuracy: ±0.5℃Package List:1 x Detector1 x User Manual1 x Plastic BoxHow to use:Afterpoweron,putthedeviceelectrodeinwatertostartdetection. About feedback If you are satisfied with our products, Pls give us 5 Stars.Your satisfaction and positive feedback is very important to us. Please leave positive feedback and 5 stars if you are satisfied with our it