$12.64

ABS 10 x RC-33 NC Wired Door Contact Sensor Alarm Magnet Reed Switch z

$11.39

1Pc USB Port Detector Infrared PIR Motion Sensor Switch For Led Light Strip kk

$16.99

Vivint Recessed Door Contact Sensor VS-DW2100-345 NEW -NEVER USED

$65.84

IP64 Waterproof Sensor *3 Wireless House Alarm *2 Outdoor Waterproof Long Range

$59.56

Sump Pump Alarm, High Water Leak Detection, with 110dB Loud Alarm and LED Ind...

$14.75

Wired Door Contact Sensor Shop NO NC Surface Mount Magnetic Reed Switch

$12

PASS & SEYMOUR MCULAV MOTION ACTIVATED SWITCH

$12.95

ADEMCO/ADT 9500SN/FGID-A930 Multiplex Glassbreak Detector

$9.99

Mini 3-Pin Infrared PIR Motion Sensor Detector Module Body Sensor Arduino PI DIY

$14.99

Veo A20-0000-003 Motion Sensor Switch 12V w/ Installation Instructions

$13

3 Station Home Alarm. Door, Window And Motion, Central Monitor, Wireless New

$35

NEW Cooper Greengate OAC-DT-1000-R Dual-Tech Ceiling Occupancy Sensor 1000 sq ft