Digital pH/ORP Controller

Product description:
Dual monitoring of pH and ORP in large LED display and   single control of either pH or ORP. Highly accurate.  
Digital pH-ORP controller with large size LED display for easy reading.  
High input impedance avoid measuring error.  
Built in SLOPE and CAL. adjust knob, easy for single point or two points pH calibration.  
"PH - ORP" control, the relay "PH" when measuring value   is above the set point for pH.  
And the relay "ORP" when measuring value is below the set point for ORP.

Model	PH-303
Measuring range	PH	0.00~14.00PH
	ORP	0~±1999mV
Accuracy	PH	±0.1%+2 digits
	ORP	±5 mV
Resolution	PH	0.01PH
	ORP	1mV
Set Range	PH	3.50～10.50PH
	ORP	0~1000mV
Environment	Temperature:0~50℃ Humidity<95℅
Power Supply	220V±10℅ 50Hz±2℅
Dimensions	160mm×102mm×40mm