Philips Battery Operated Magnetic Wireless Door/Window Alarm (4-Pack) LRM3320W/27 - The Home Depot
GE Door and Window Sensor (4-Pack) in the Door & Window Sensors department at Lowes.com
Magnetic contact switch (door sensor) : ID 375 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Door Window Sensors Detector Home Security Magnetic Sensor Embedded Door Window Anti-theft Alarm Strong Concealment - Walmart.com
Door/Window Alarm - Stop Your Teenager from Sneaking Out
Honeywell 943WG - Mini Magnetic Contact - Alarm Grid
2 Doberman Security Window / Door Alarm Kits(2 vibration sensors 4 magnetic) | eBay
Wireless Home Security Door Window Entry Burglar Alarm System Magnetic Sensor - Walmart.com
GE Magnetic Window or Door Alarm, Battery Operated with On/Off Indicator Light 5 Pack at Lowes.com
Sensaphone Magnetic Reed Switch 0006 - The Home Depot
Deltaco Smart Home Magnetic door and window sensor, WiFi - White - MaxGaming.com
uxcell Magnetic Sensor Home Door Window Entry Warning Switch: Reed Switch: Amazon.com: Tools & Home Improvement
Honeywell 5899 - Magnet for 5816 Wireless Door Sensor and Window Sensor - Alarm Grid
Amazon.com : Door Window Alarm 2 Pack Noopel Home Security Sensor Burglar Anti-Theft 120DB Alarm with Batteries Included - DIY Easy to Install (2) : Electronics
Swann Magnetic Window/Door Alarm (Pack of 2) SW351-MD2 B&H Photo
GE Battery Operated Magnetic Window and Door Alarms (4-Pack) 45174 - The Home Depot
SwitchBot Contact Sensor | Window Door Alarm Sensor for Home Security – SwitchBot US
HENDUN Wireless Remote Door Alarm, Windows Open Alarms,Magnetic Security Sensor, Pool Door Alarm for Kids Safety, Alzheimer's Apartment Alarm - Amazon.com
Honeywell 945T - Mini Surface Mount Magnetic Contact with Screw Terminals - Alarm Grid
Magnetic door & window contacts for intruder alarm systems | Eaton
6/10/12x Wireless Home Window Door Burglar Security Alarm System Magnetic Sensor | eBay
Door/Window Entry Alarm with Magnetic Sensor, Pack of 2 - Household Alarms And Detectors - Amazon.com
Arlec Window and Door Magnetic Contact Alarm - 4 Pack - Bunnings Australia
WiFi Window & Door Alarm Sensor | Swann Security
SDC EH Series Magnetic Door Holder & Releasing Device
Wireless Home Security burglar alarm Magnetic Sensor Door Window Alarm Super Loud Pool Door Alarm for Kids - Walmart.com
Amazon.com: Wireless Home Security burglar alarm, Magnetic Sensor Door Window Alarm, Super Loud 110dB, Pool Door Alarm for Kids Pack of 4 : Electronics
Honeywell 958 - Overhead Door Magnetic Contact - Alarm Grid
