Add-on alarm sensors and triggers to enhance the effectiveness of your security system.
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Price range: $1–$80
Items in range: 69
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In Stock (68)
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Sensors, Triggers, and Relays

Automatic Wiper and Headlight Control System
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Rain Sensing Wiper System • Light Sensing, Headlamp Control Output • Operates In Parallel With the Existing Wiper System • Adjustable Sensitivity • Reliable Optical Infrared Sensor
$79.95
Shipping: FREE
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  • 5.0
  (1 review)
Remote Turn-on Module/Trigger
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Remote Turn-On Module • Used To Turn On Remote Amplifiers • 2 Second Delay To Prevent Turn-On Noise • Supplies 2 Amps Of Current • Can Drive Multiple Amps Or A Power Antenna • Activated By Low Level Trigger Lead
$12.99
Shipping: FREE
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Single Pole, Double Throw 30/40 Amp Relay
SPDT Relay • Single Pole Double Throw • Useful for integrating your vehicles alarm system • Control power windows, door locks, light, etc. from your security system
$1.99
  • 4.2
  (5 reviews)
Magnetic Switch, Normally Closed/Open
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Magnetic Switch, Normally Closed • One of the only switches with both normally closed contacts • Great for pick-ups with sliding rear window
$6.49
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  • 4.8
  (5 reviews)
For Bosch BRLY1 Relay
Wire Harness / Relay Socket for Bosch BRLY1 Relay
$1.49
  • 4.6
  (7 reviews)
12V Accessory Pulse Timer
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Pulse Timer with Adjustable Delay • Triggered by + or - Pulse, or State Change • Adjustable Timer: 0 - 60 Seconds
$13.99
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  • 3.7
  (3 reviews)
Universal Trigger Output Module for Video Bypass
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Universal Trigger Output Module • Several Useful Features • Latched or Pulsed Output • Digital Timing Control
$26.95
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  • 4.6
  (28 reviews)
Single Pole, Double Throw 20/30 Amp Relay
SPDT Relay • Single Pole Double Throw • Useful for integrating your vehicles alarm system • Control power windows, door locks, light, etc. from your security system
$4.99
  • 5.0
  (5 reviews)
Invisibeam Field Disturbance Sensor
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Invisibeam® Field Disturbance Sensor • Generates two invisible detection fields around your vehicle • Offers 2 response types
$32.99
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  • 4.1
  (10 reviews)
Small SPST Toggle Switch
Single Throw Single Pole Toggle Switch • Circuit Either Open Or Closed
$1.99
  • 4.8
  (10 reviews)
Glass Break Sensor (GSi)
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ScyTek GS1 Glass Break Sensor • Detects Tampering and Breaking of Vehicle's Glass • Detects the Frequency of Sounds and it Will Set off the Car Alarm when it Senses Broken Glass • Adjustable Sensor
$9.99
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  • 5.0
  (1 review)
Remote Turn-on Module
Free Flat Rate Shipping within the 48 states
Remote Turn-On Module • Used To Turn On Remote Amplifiers • 2 Second Delay To Prevent Turn-On Noise • Supplies 2 Amps Of Current • Can Drive Multiple Amps Or A Power Antenna • Activated By Low Level Trigger Lead
$12.99
Shipping: FREE
To the US 48 • other rates
  • 4.8
  (10 reviews)
12 Volt Backup Battery and Sensor
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12 Volt Backup Battery System • Powers siren when battery is disabled
$29.99
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  • 4.8
  (4 reviews)
Nite Lite System
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Nite Lite System • Automatically activates headlight and parking lights when driving in the dark • Turns lights on when windshield wipers are in use
$29.99
Shipping: FREE
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  • 4.8
  (12 reviews)
Single Pole, Double Throw 20/30 Amp Relay
SPDT Relay • Single Pole Double Throw • Useful for integrating your vehicles alarm system • Control power windows, door locks, light, etc. from your security system
$1.99
  • 5.0
  (4 reviews)
Digital Tilt Sensor Also Known As 507T
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Tilt/Motion Sensor • Adjustable Tilt and Motion Sensitivity • Adjustable Arming Delay • Independently References Initial Vertical and Horizontal Inclination Each Time the Vehicle is Parked
$29.99
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  • 4.7
  (6 reviews)
Programmable Universal Trigger Module
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Universal Trigger Output Module • Easily Configured Through a PC or Android Device • Eight Inputs • Four Outputs • Timed Output Is User Adjustable
$39.95
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Universal Trigger Module Provides 15 Different Functions Activated From A Positive or Negative Trigger
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Universal Trigger Module • Provides 15 Different Functions Activated From a Positive or Negative Trigger • E-Brake Emulator • Retained Accessory Power • GMLAN Aftermarket Amp Turn-On • Ability to Custom Program the Trigger
$29.99
Shipping: FREE
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Ultrasonic Sensor for Security Systems (DEI Install Essentials 509U)
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Ultrasonic Sensor for Security Systems • Detects air pressure changes in the cabin of the vehicle • Detect thieves entering vehicle without glass breakage • Adds extra protection when used in conjunction with other security systems
$29.99
Shipping: FREE
To the US • other rates
  • 4.5
  (2 reviews)
Glass Break Audio Sensor
Audio sensor that detects attempts to tamper with or break your vehicle's glass
$14.99
  • 4.6
  (17 reviews)
Items per page: 20 50 100
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