Other refinements include modifications to the switch housing and {TAIL ~ condition indicators} for monitoring {HEAD ~ the system} and signaling water detection and shutdown operations 
Other refinements include modifications to the switch housing and { TAIL ~ condition indicators } for monitoring { HEAD ~ the system } and signaling water detection and shutdown operations
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH