Window sensor are available like so:

First Alert Window and Door Alarms- set of 8
Feature: ... Great for home, office and travel; just peel and stick- no tools required; batteries included ...more
Editorial Reviews — ... Product Description | The First Alert Instant Alarm Door & Window Entry Alarm system is easy to install. It takes no wiring. The First Alert Instant Alarm works with magnetic technology. Just remove the backing and stick in place. It ads security to any door or window, even partially opened windows. First Alert Instant Alarm provides a 90 Decibel Alarm or can be set to Chime or Off position...more

Skylink WT-433 Window/Door Sensor
Feature: ... Sends a signal to Control Panel or Dialer when contact is broken.; Add on as many magnetic contacts (MS-001) as needed.; Range up to 100 feet ...more
Editorial Reviews — ... Product Description | Extra Door / Window Sensor... SAVE! Protects entrances and sends a signal to the control panel or dialer when contact is broke. Up to 100' range. Measures 3 3/8 x 1 1/2 x 1 1/8" and weighs 2 3/5 ozs. Order ONLINE Today! AVAILABLE SEPARATELY: Skylink Complete Wireless Alarm System and Smoke / Carbon Monoxide or Extra Motion Sensors - word search in our Store for 'Sensors' and 'Alarm System'. Extra Door / Window Sensor...more

Motorola Homesight Door/Window Sensor HMSM4140
Feature: ... Motorola ...more
Customer Reviews —
Editorial Reviews — ... Product Description | Whether at home or away, get the peace of mind of knowing when a window, door, cabinet, or other entry point as been opened or closed. Place the Wireless Door/Window Sensor on any space that needs protection and monitoring. The sensor creates a magnetic s...more

InGrid SN701IG Door or Window Sensor
Feature: ... Create unique names for each sensor; A unique two-way design sends signals to the grid extenders and then confirms reception to provide greater reliability; Affordably protect all your windows and doors; Sensors can even be put on cabinet or bedroom doors; Monthly Maintenance Fee, High Speed Internet and in-home Router are required (not included) ...more
Customer Reviews —
Editorial Reviews — ... Product Description | add-on sensor kit for InGrid Home Security systems * monitors doors, windows, and cabinets * easy installation with self-adhesive backing * 1-7/16"W x 1-9/16"H x 3/4"D *...more

Door Window Entry Wireless Magnetic Sensor Alarm Remote

X10 Home Security Door/Window Sensor X-10 (DS10A)

Ademco Honeywell 5800Micra Wireless dr/window sensors

Security Window Contacts Bulk of 10 sensors

2 PACK X10 DOOR / WINDOW SENSOR DS10A 2 PACK NEW

Ademco Honeywell door window sensor contacts lot of 68

3-Pac X10 Powerhouse Door/Window Sensor DS10A Security

Security Window Door IR Sensor Burglar Entry Alarm e

10 Recessed Door or Window Contacts Reed Switch Sensor

Door Window Entry Wireless Magnetic Sensor Alarm Remote

**NEW** 2-IN-1 MOTION DETECTOR & DOOR OR WINDOW SENSOR

Safety Door Window Entry Magnetic Sensor Alarm

Safety Door Window Entry Wireless Magnetic Sensor Alarm

Door Window Entry Wireless Magnetic Sensor Alarm Remote

2PK Battery Op. Christmas Window Candle Bracket, Sensor

Battery Cordless Window Candle w/Sensor 'Pewter' Base

New GE Security DOOR/WINDOW SENSORS MODEL 60-362-10

NEW Wireless Door/Window Sensor HRDS1

10 Surface Mount Door & Window Sensor Reed Switch

ITI GE 60-239-10-319.5 SX-V Door Window Sensor CONTACT

4 pcs Safety Door Window Entry Magnetic Sensor Alarm

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