PH 201 Ph Meter and Value Controller with Probe and HI/LO action function switch

PH-201 Digital pH Controller 
Measuring range: 0.00~14.00PH
Accuracy: ±(0.1%+2 digits) after calibration
Resolution: 0.01PH 
Set Range: 3.50～10.50PH
Environment Temp: 0~50℃ Humidity: <95%
Dimensions: 150mm×85mm×40mm

HI/LO action function switch