WINN SPDT Surface Mount Contact

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Our BS-2033 surface mounted magnetic contact features a screw mount, concealed or surface wiring.
Brand: WINN
Part Number: BS-2033C


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Slim and hardwired, the BS-2033C Winn SPDT Surface Mount Contact is a cost-friendly addition to your home security system. This door/window sensor features a reed switch on one side with a magnet on the other- triggering your home alarm when separated.

The small door/window sensor is discreet and functions with an SPDT reed form. It features a screw mount, concealed or surface wiring and its attractive cover keeps mounting screws and terminal screws hidden. For fast and easy installation, the WINN SPDT Surface Mount Contact is a great solution to any home or business owner's security needs.


  • Part Number: BS-2033C
  • Loop Type: Closed&Open
  • Reed Form: SPDT
  • Closed Gap [Inch(mm)]: 11/8 (28)
  • Maximum Initial Contact Resistance (Ohm): 0.150
  • Maximum Contact Rating (W): 3
  • Maximum Switching Voltage (VDC/VAC): 30
  • Maximum Switching Current (A): 0.2


Door and Window alarm contacts are essential to any home or business security system. The technology is very simple. Each contact consists of a sensor, which is attached to the frame of the door or window, and a magnet, which is placed on the door or window itself. The magnet acting on the sensor creates a circuit, and when the sensor is separated from the magnet, a signal is sent to the alarm control panel, signifying an entry breach.

There are two primary types of door and window contacts: Recessed alarm contacts and surface mount alarm contacts. With recessed alarm contacts, the magnet and sensor are installed inside the frame and the door or window.

Alarm wire is necessary for all hardwired alarm contacts. 22 Gauge Station Security Wire is suitable for most security systems and other low voltage electrical hookup security products.

Additional Info

Additional Info

Part Number BS-2033C
What's in the box (1) WINN SPDT Surface Mount Contact


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