4 in 1 Water Quality Tester Orp/H2/Temp/Ph

Specification product name 4 in 1 temperature h2 orp ph meter material plastic function test water purity package retail box ph rang:0.00-14.00 ph resolution:0.011 ph accuracy:±0.05 orp rang:±1200mv orp resolution:1mv orp accuracy:±2mv h2 rang:0-2400ppb;0-2.400ppm h2 resolution:1ppb;0.001ppm h2 accuracy:±10ppb;±0.01ppm ph test: 1.shut-off meter,press hold/temp and mode/cal simultaneously,don't release 2.press on/off,and release all button,reset complete c-200 ph test,turn on the meter,press power button for 10s,it will display“- 丨”,rest complete.