Proximity switches and sensors use a reed switch and a permanent magnet. Each is encased in a plastic housing for protection and ease of mounting. A classic use is sensing the opening of a door in a security system. A reed switch in the jamb and a permanent magnet in the door complete a circuit when the door is closed. Opening the door breaks the circuit.

Proximity switches can be achieved using a number of different technologies depending on the application. Use the contact information button to request help with choosing the right proximity switch for you application.

Application information

NPN - PNP circuit

Serial Number	Details	Product	PDF
PSS25S/30 Data Sheet Custom Request	Supply Voltage Max. Vdc 4.5 Min. - 20 Max. On Current Max. mA 25 Output Type Open Collector Output Current Max. mA 250 Output Loading Ohms 4.7K Sensing Distance Min. mm 8 Operating Temperature Continuous Deg. °C -20° + 85° Intermittent Deg. °C -20° +105° Storage Temperature Deg. °C -25° +90° Case Material Polypropylene
PSSM25D/30 Data Sheet Custom Request	Supply Voltage: 10 - 15Vdc. Quiescent Current: 25mA Max. Sensing Distance: 8mm Typical Output Type: 5V Logic Gate (Pull Down) Case Material: Aluminium See Data Sheet for further information
PSSM25S/30 Data Sheet Custom Request	Supply Voltage: 4.5 - 20Vdc Sensing Distance: 8mm Min. Output Type: Open Collector Case Material: Aluminium See Data Sheet for further information
PTS25D/30 Data Sheet Custom Request	Supply Voltage: 10 - 15Vdc. Quiescent Current: 25mA Max Sensing Distance: 8mm Typical Output Type: 5V Logic gate (Pull down) Case Material: Brass-Nickel Plated See Data Sheet for further information
PTS25S/30 Data Sheet Custom Request	PNP/NPN Output Supply Voltage: 4.5 - 20Vdc. Output Current: 250 mA Max. Size: Length. 35.0mm (1.377in) Diameter. M12 Thread Normally Open Contact Use matching PTSM Magnet
PTSP25D/30 Data Sheet Custom Request	Supply Voltage: 10 - 15Vdc. Max. Quiescent Current: 25mA Max. Sensing Distance: 8mm Typical Output Type: 5V Logic Gate (Pull Down) Case Material: Acetal See Data Sheet for further information
PTSP25S/30 Data Sheet Custom Request	Supply Voltage: 4.5 - 20Vdc On Current: 25mA Max Output Type: Open Collector Output Current: 250mA Max. Case Material: Acetal See Data Sheet for further information
PGS 18/30 Data Sheet Custom Request	Supply Voltage: 4.5 to 24Vdc Output Saturation Voltage:(Output Low) 400mV max. Output Leakage Current: 10uA Supply Current: 11mA typ. High Frequency cut off: 30 kHz min. See Data Sheet for further information