Automatic Adjustable Infrared PIR Motion Sensor Human Body Induction Switch
$10.69
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Sensors & Motion Detectors
Motion, door/window and glass-break sensors are the trip-wires of a security system. Check what hub or panel they pair with (many are brand-specific and won't mix), wired vs wireless, and battery life for wireless units. For motion sensors, pet-immune designs avoid false alarms. Buying spare or used sensors is fine — just confirm the protocol and that they're compatible with your system.
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Automatic Light Sensor Control Switch DC8-50V Photocell Light Switch Repair Part
$8.59
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PIR Infrared Motion Sensor Detector Smart Switch AC 110V-240V Light Lamp Switch
$5.65
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Solar Energy Saving 6LED Flashing Red Light Motion Sensor 110db Siren Alarm Lamp
$18.51
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DC4-12V PIR Motion Detection Sensor Light Switch Infrared Human Body Induction
$5.16
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New 100 MA 10 x RC-33 Wired Door Contact Sensor Alarm Magnet Reed Switch
$9.50
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220V/AC Automatic PIR Occupancy Motion Sensor Light Switch Auto On Off Infrared
$11.43
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Motion Sensor Switch with Outlet, PIR Wireless Motion Sensor Plug with Light Se
$35.99
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SALE Solar Motion Sensor Alarm with 129db Siren
$35.19$43.99
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5V/1A Smart Thermometer Hygrometer Wi-Fi Temperature Humidity Sensor Monitor
$18.81
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Motion Sensor DC 5V 24V Light Switch Movement Detector Automatic PIR Sen I
$6.56
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Body Infrared PIR Motion Sensor Switch For LED Light Strip Automatic DC 12V F
$8.31
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Automatic Water Leak Detector with Sensors and Shut-off Valve
$78.60
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Automatic Water Leak Detector w/ Sensors & Stut-off Valve Water Leak Detecting
$48.59
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Acuity Controls NCM ADCX RJB Auto Dimming Photocontrol Ceiling Mount Sensor
$74.00
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Wireless Smart Wi-Fi Door/Window Contact Sensor
$19.45
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Xfinity Home Security Door/Window Sensor Model LDHD2AZW XHD2-LD (2 sensors)
$29.87
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Automatic Water Leak Detector with Sensors and Shut-off Valve
$58.59
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Wireless Door/Window Sensor. the Door/Window Sensor Requires a Tattletale Base U
$25.71
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Wire-Free Specialty Programmable Motion Sensor White
$29.24
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SALE Wyze Entry Sensor 3-Pack for Home Security
$87.99$109.99
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Motion Detector Switch AC100-240V High Quality Replacement for Light Control
$13.16
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DVS15-1LZ Decora Vacancy Motion Sensor In-Wall Switch, Manual-On, 15A, Single Po
$37.14
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DC 12V-48V Dusk To Dawn Photocell Light Switch 8-50V Light Sensor Control Switch
$13.26
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5V-24V Automatic PIR Body infrared LED Strips Light Motion Sensor Switch
$10.88
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Safe House Invisible Pulsed Beam Infrared Photorelay Alarm 49-307 Radio Shack
$44.95
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DIVERSA WOSSIU2-P-VI WALL SWITCH OCCUPANCY SENSOR, 2-POLE, 120/277V, IVORY
$64.50
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High Sensitivity 24.125GHz Human Inductive Motion Microwave Radar Sensor
$20.78
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New 100 MA 10 x RC-33 Wired Door Contact Sensor Alarm Magnet Reed Switch
$13.75
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Solar Driveway Alarm Wireless Outdoor 1/2 Mile Range - Customizable Alarm Tones
$99.95
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Flood Gen4, WiFi, Bluetooth, Zigbee, Matter Smart Flood Sensor with Leak Sensor
$51.99
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New Sealed Philips Hue Smart Dimmer Switch with Remote 458141
$19.99
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Onvis Outdoor Weather Resistant Motion Sensor Detector Ip66 Water Resistance
$71.25
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Wireless Motion Sensor Alarm & Doorbell Chime - 90dB Security Alert System, Remo
$59.99
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SALE 5-24V Auto ON OFF Detector Infrared PIR Motion Sensor Switch For Led Light Strip
$10.48$12.19
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SALE Solar Motion Sensor Alarm with Dog Barking Sound
$45.59$56.99
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Wireless Driveway Alarm For Home Security System Easy To Use
$23.69
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Wink Quirky GE Tripper Smart Window Door Sensors 2 Pack
$16.99
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NEW Simplisafe MOTION SENSOR White CA001 (Gen 2)
$19.95
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4-pack SimpliSafe Door Window Magnetic Entry Sensor ES3 (Gen 3) Brand New
$38.00
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WattStopper LMDX-100 Dual Tech Corner Mount Motion Sensor RJ-45 DLM 24VDC
$200.00
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3 Pack Wireless Door Window Alarm with 90DB Siren for Home & Kids Safety
$19.67
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Molex CoreSync Advanced Lighting Sensor Standard White 182089-2000 Low Voltage
$19.75
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129dB Outdoor Solar Alarm With Motion Sensor 4 Modes Dog Barking Gunshot Sounds
$25.99
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Qualirey Solar Outdoor Motion Sensor Alarm 2 X 129Db Loud Noise Maker 13 Sound
$95.62
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2pcs PIR Motion Sensor Switch Wall Light Switch For Working Humidity: <93%RH
$12.21
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Water Leak Sensor Transmitter Detector for Flood Water Leakage
$234.99
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LUTRON MS-A202-IV Occ Snsr,PIR/Ivory Ultrasonic Occupancy Sensor 261137
$55.00
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