Выражение встречается в следующем контексте:
- GREASE PROXIMITY SWITCH
- ABRASIVE BELT MOTOR
- CROSSING CARRIAGE MOTOR+ENCODER
- BELT HOLDER CARRIAGE MOTOR+ENCODER
- EXHAUSTER MOTOR
- VIBRATOR MOTOR
- SECURITY SWITCH ABRASIVE BELT MOTOR
- SECURITY SWITCH CROSSING CARRIAGE MOTOR
- SECURITY SWITCH BELT-HOLDER CARRIAGE MOTOR
- SECURITY SWITCH EXHAUSTER MOTOR
- SECURITY SWITCH VIBRATOR MOTOR
- LIMIT SWITCH CROSSING CARRIAGE DS
- LIMIT SWITCH CROSSING CARRIAGE OS
- LIMIT SWITCH BELT HOLDER CARRIAGE BACK
- LIMIT SWITCH BELT HOLDER CARRIAGE AHEAD
- LIMIT SWITCH BAND DOOR
- LIMIT SWITCH BAND BREAK
- SOLENOID VALVE BLOWING

Заранее спасибо

The same probably applies to 'LIMIT SWITCH' -- but, not being an expert on the subject, I don't know what a 'limit switch' is.