... proof structure , is more suitable for outdoor 3. Can be used to measure the value of grounding resistance of grounding system in a ... systems . Electrical equipment , lightning protection equipment , etc , you can also measure the AC voltage Specifications:Grounding resistance range: 20Ω 200Ω 2000 ... local tax(if there is ). *We are always here to solve any problem you met in our transaction , pls don ...