Earth/Ground Resistance Online Detector/Tester ( MiniType,Wired system)

https://www.sltup.com/Earth-Re....sistance-Online-Dete

Class of protection: IP65 and WF2, can be used outdoors
Power supply: 85~265VAC/DC
Range of resistance: 0.01Ω～200Ω
Resolution ratio: 0.001Ω
Precision: ≤1Ω(Error ≤10mΩ, 20℃±5℃, 70%RH below); ≤100Ω(Error≤±1%)
Working Environment: -40℃～85℃，Humidity ≤95%RH (no condensation）
Overflow indication: If the value is larger than 100Ω, the" -- ”symbol is displayed
Alarm output: Panel alarm and indicator light triggered simultaneously; Dry contact (with 5A / 220VAC)
Communication interface: RS485 (ModBUS RTU protocol), photoelectric isolation, 1200 m /9600bps
Size of product: 169mm×142mm×150mm
Ground wire perforation dimensions: 54mm×21mm, Closed mouth type (can pass through 54mmX10mm flat steel or Ф20mm cable)
Installation: The ground wire passes through the central hole of the detector and fixed on the ground flat steel