{TAIL ~ The water ionization switch} selectively conducts {HEAD ~ electricity} when exposed to water and includes an initially dry non conductive crystallized compound 
{ TAIL ~ The water ionization switch } selectively conducts { HEAD ~ electricity } when exposed to water and includes an initially dry non conductive crystallized compound
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH