1.Replaceable combined probe design, meeting different applications. 2.Multi-color backlight display, easy to read data in different modes. 3.Data reading indicator and automatic data locking when the reading is stable. 4.Low voltage indication ensures timely battery replacement. 5.Supplied with standard solution, sample vials and lanyard for convenient field test. Dual-control mode with mobile APP connection to achieve powerful data storage. Protection class: IP67 Name: 3 in 1 PH ORP Temp Meter Measurement Range: PH Rang: -2.00-16.00pH Resolution:0.01pH Accuracy:??0.01pH Calibration Points:1-3 point automatic calibration Auto Temperature Compensation:0??C-60??C(32??F-140??F) ORP Range:-1000mV-1000mV Resolution:0.1/1mV Accuracy:??0.1% F.S Temp Range:0??-60?? (32??F-140??F) Accuracy:??0.2??C Battery:4x1.5V AAA alkaline battery(not including battery) Color: As shown Material: plastic Package Contents: 1 x PH Meter 3 x Calibration Solution(1 x PH4.00,1 x PH7.00,1 x PH10.01) 3 x Inspection jar 1 x Rope 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.