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Greenco's Reed Switch consists of a hermetically sealed glass capsule containing two cantilevered ferromagnetic blades. The blades come together and close the electrical circuit whenever the magnet, mounted on the piston, passes under the response area of the switch. 
An integral arc suppressing resistor-capacitor circuit protects blade contacts from voltage spikes, thereby extending cycle life. The lead wires" are shielded to protect against sending or receiving induced currents as false signals. The shield may be "drained" using uninsulated third wire. An ohmmeter is recommended to test the switch function. DO NOT USE an incandescent light bulb as high in-rush may damage switch.

The comprehensive design of the cylinder barrel thickness and mass of magnet, coupled with low profile switch provides sensitivity, dependability, repeatability and desired response time. PROXIMITY and GO switches also available. Contact factory for additional information.

Note: Reed switch wires are 6' long.