Wireless open/closed sensor

Coin cell | AA | Industrial

Spook wireless open/closed sensors are ideal to monitor the status of an open/closed connection. The sensor has a magnetic switch attached via an interconnecting cable and detects whether there is a magnetic field or not.

The magnetic contacts are usually normally open (NO) and when closed a magnetic field is detected. Alternatively they can be set to normally closed (NC) and trigger an alert when the connection becomes open.

Open/closed sensor

Did you know?

Did you know

The reed switch was invented in 1936 and patented in 1941 by Walter B. Ellwood who was employed by Bell Telephone Laboratories. Walter was trying to design a cheap and easily replaceable relay for switching telecommunications traffic and came up with the design.

The contacts of a reed switch are set to normally open (NO) and when the magnetic field of the reed switch is broken it changes to normally closed (NC). The reed is the metal part inside the switch and is relatively thin and wide in order to make it flexible. It resembles parts of some reed plants like the bull rush hence its name.

Walter B. Ellwood (B: 1902 - D: 10th December 1965)

Potential uses for wireless open/closed sensors

  • Property door and window access
  • Restricted areas
  • IT server rooms and closets
  • Freezer and cooler doors
  • Shipping cargo bay doors
  • Garage doors
  • Marine vessels

Get in touch with Spook

Please contact us if you wish for further information on how Spook can help with your environmental and power monitoring needs.

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