ORP-169C High Precision ORP Pocket Tester, ORP & Temperature Tester 2 In 1,Range: 0~+/-1999mV, Accuracy: +/-5mV

Technical Specification: Measuring range:0~±1999mV Accuracy: ±5mV Resolution:1 mV Display:4-digital LCD Power Supply:4×1.5V(AG13)(battery not included) Dimensions:170×36×23(mm3) Weight:91gYou may also like UV-A ultraviolet irradiance meter single and double channel UV-B ultraviolet intensity detector UV illuminance meter.