Ground Resistance Tester Kit Retractable Non Contact Closed Type Online with GPRS ETCR2800B Item Type: Ground Resistance Tester Model: ETCR2800B Material: PVC Uses: Suitable for transmission line tower grounding; meteorological lightning protection grounding; petrochemical grounding; communication grounding; substation grounding; railway facilities grounding; building warehouse grounding; metal loop resistance; electrical equipment grounding, etc. Basic Parameters: Function: Loop grounding resistance online monitoring, metal loop connection resistance online monitoring, grounding condition monitoring CT Structure: Closed loop Resistance Range: 0.01Ω~200Ω Resolution: 0.001Ω Accuracy: ±2%rdg±3dgt (20℃±5℃, below 70%RH) Overflow Indication: When the test value is greater than 200Ω, the LCD displays the OLΩ symbol Alarm Indication: Detector sound and light alarm Alarm Settings: Background Settings Working Temperature And Humidity: -20℃~55℃; 20%RH~90%RH Temperature And Humidity Error: No more than 5% Shifting: Automatic shifting External Magnetic Field: <40A/m External Electric Field: <1V/m Single Measurement Time: About 0.5 seconds Power Consumption: 12VDC 150mA Maximum