The PH electrode detector is accurate and reliable, providing almost instantaneous readings. Working voltage:50.2V () Working current: 5-10mA Detectable concentration range: PH0-14 Detection temperature range: 0-80 Response time: less than equal 5S Settlement time: less than equal 60S Component power: less than equal 0.5W. Working temperature:-10 - 50 (nominal temperature 20) Humidity: 95% relative humidity (nominal humidity 65% relative humidity) Size of PH test module: 42mm x 32mm x 20mm Output: Analog voltage signal output. PH range:0-14pH. Temperature range:0-80 Alkaline to 15 mV or less Theoretical percentage: 98% Internal resistance:less than equal 250m Response time:less than equal 1 minute Working temperature:0-60 Terminal:BNC connector BNC connectors are suitable for most PH meters and controllers. Note:Due to different factory batches, the appearance be slightly different, but it not affect its normal use. Color:As Shown Material:PCB Package Contents: 1set * pH test sensors Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.