... indicator,sensor indicator,high voltage indicator,indicator,high voltage live display device,high voltage display,led display,voltage indicator,device indicator,transducer ... +40oC~ - 30oCApplication:LB series high voltage indicator is adapted for indoor, rated voltage 3~40.5kV, operation frequency 50Hz ... LB-1 is a combination unit for indicating the voltage presence on M.V. cubicles by being installed ...