Used on alofts sonar system, model 980(v1). contact block 1 normally open, 1 normally closed contact; internal shunt resistor; extended head w/guard; lens color green
Used on compressor, reciprocating. breathing air compressor.. the complete part number is "NO3925/asy". this is a tempature switch, normally closed which monitors the final valve head temperature on bauer compressors. it is set to 320 degrees fahrenheit