2 times s earth resistance clamp tester

{"cid":"91185974","title":"ZXET3008 Insulation Tester: Soil Resistivity, DC Resistance, On-Resistance, Equipotential Connection Resistance","imgUrl":"https:\/\/img.chinax.com\/nimg\/e2\/2a\/da2b6223340d2d066dcf01fd00ac-200x200-1.jpg","attrs":{"Price":"US $ 1099.00-2239.00\/SET","Brand Name":"GDZX","Model Number":"ZXET3008","Minimum Order Quantity":"1Set","Delivery Time":"7-12 work days","Certification":"ISO9001","Place of Origin":"China","Payment Terms":"L\/C,T\/T,Western Union,MoneyGram,WeChat,Paypal","Supply Ability":"1200sets\/year","Packaging Details":"Packing wooden case or carton","Product name":"Double Clamp Ground Resistance Tester","Power supply":"DC 7.4V 1.8Ah rechargeable lithium battery","Back light":"Controllable white screen backlight, suitable for use in dark places","Test frequency":"128Hz\/111Hz\/105Hz\/94Hz(Automatic frequency selection)","Test voltage waveform":"Sine wave","Short circuit test current":"AC 20mA max","Line voltage":"Measurement below AC 100V","Communication Interface":"With USB interface, the stored data can be uploaded to the computer, save and print","Working temperature and humidity":"-10 \u2103 ~ 40 \u2103; below 80% rh","Insulation resistance":"20M\u03a9 or more (500V between circuit and case)"}}