KL-010 Folding Three In One pH Tester Technical Specification： Measuring range PH 0.00～14.00PH ℃ －5～50℃ RH 10%～99%RH Resolution PH 0.01PH ℃ 0.1℃ RH 1%RH Accuracy PH +/-0.1PH ℃ +/-1℃ RH +/-5%RH Automatic Temperature Compensation: 0℃~50℃ Power Supply：4x1.5V(AG-13 Button Battery) Operating Temperature: 0℃~50℃ Dimension：156mmx55mmx23mm Weight：95g