It insulates the noise, surge, etc., entering from {TAIL ~ the sensor} from {HEAD ~ the central monitoring panel} 
It insulates the noise , surge , etc . , entering from { TAIL ~ the sensor } from { HEAD ~ the central monitoring panel }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD