Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor NC With Adjustable Bracket

Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits Or Entries Through Emergency

Safety Technology International, Inc. STI-6402 105 Db Exit Stopper® Multifunction Door Alarm For Double Doors With On/Off Switch And 9 Volt Battery

Seco-Larm SM-4601-L3Q Industrial Wide-Gap Magnetic Contact Switches, 3" Operation Gap NO/NC, Open/Closed Loop (3 Wires)

Hxchen RC-35 NC & NO Wired Magnetic Door Window Contact Sensor Switch Contact Sensor Alarm Magnetic Reed Switch White - (5 Sets)

Door Chime, Door Sensor Chime For Door Opens - Door Ringer With 500ft Operating Range 52 Chime Adjustable Volume Mute Mode LED Indicators -Entry

IEI 212I Indoor Flush-Mount Keypad

Eufy Security Entry Sensor, Detects Opened And Closed Doors Or Windows, Door Monitoring, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor

Wireless Doorbell - PHYSEN Door Bell Chimes With Mute Mode - 58 Ringtones&5 Volume Levels Operating At 1300-Ft Range LED Strobe, 2 Transmitters+3

Olideauto Wireless Wired Handicapped Push Button 2PCS,Work With Door Opener Automatic 4.5'' Square Stainless Steel Push Panel Olide-510,WIFI

NSI-TA502 Electric Door Switch, Light ON When Open, 125/250VAC, 1-1/4" Width, 3-7/8" Height, 2" Depth, Ohm

3In1 Alarm - Door Ajar Alarm, Door Chime With Delay, 0/5/10/30/60 Seconds, 2/5 Minutes, Close Door Reminder, 80 To 120 Db, Time Delay Door Alarm

Allstar Radio Transmitter: Open-Close-Stop, Momentary Contacts, Indoor, Surface Mount, Button Model: 639T

Door Chime, Door Sensor Chime For Door Opens - Door Ringer With 500ft Operating Range 52 Chime Adjustable Volume Mute Mode LED Indicators -Entry

Sanjie Door Chime, Door Open Contact Sensor Alarm For Business/Store/Home/Office When Entering, With 500 ft Range,26 Chimes 5 Adjustable Volume 2

Door Chime, METAK Wireless Door Open Contact Sensor Alarm With 500 ft Range, 58 Chimes And 5 Volume Levels For Business/Store/Home/Office When

Victorshome Magnetic Reed Switch RC-36 NC Recessed Wired Window Door Contact Sensor For Home Security And Burglar Alarm Systems 10 Pcs

3 Pcs Brown Wired Door Contacts Surface Mount NC Security Alarm Door Window Sensors. These Door Contact Position Switches (Dcs) Work With All Access C

DETEX Door Prop Alarm Surface Mount Battery Powered One MS-1039S Magnetic Switch 7-Pin IC Cylinder Housing Gray EAX-300SK1 IC7 GRAY

Uxcell Home Office Door Window Recessed Wired Sensor Security Alarm Contacts Magnetic Reed Switch 3Pcs | Harfington

Dynalock 9275 | Door Position Switch

Honeywell Ademco 5816WMWH

Honeywell Ademco 947-75TWH

5 Sets Mc-38 Wired Door Window Sensor Magnetic Switch Home Alarm System Detector