Relay alarms

(9131 products available)

Alarm Sensor Infrared safety beam IR Relay NC/NO Photocells automatic window gate door Garage Barrier Detector Newest Universal

$4.50-$5.50

Min. Order: 2 pieces

2024 Wired infrared pir motion PIR detector sensor for home security alarm system with relay output with NO NC Power

$38.00-$40.00

Shipping per piece: $13.13

Min. Order: 1 box

Gas alarm controller to connect ch4 lpg monitoring voc detector co h2s gas detector

$268.00-$298.00

Min. Order: 1 set

Vodasafe Hidden GPS Tracking Device Detector GPS Tracker for Car with Cellphone and WiFi Detection Alarm System

Ready to Ship

$228.00-$234.00

Shipping per piece: $18.45

Min. Order: 1 piece

JD2912-1Z DC12/24V 5 PIN 80A SPDT Truck Boat Vehicle Automotive Car Relay Switch

Ready to Ship

$0.70-$0.80

Shipping per piece: $0.34

Min. Order: 100 pieces

NGJ Type Reverse Power Relay(With Unloading Function)

$89.85-$102.00

Min. Order: 10 sets

SZMYQ Tuya Wifi Smart Home Outdoor Solar Infrared Waterproof 135DB 12V Wireless Store Timer Relay With Alarm Siren Burgers

Ready to Ship

$9.80-$13.86

$14.00-$19.80-30%

Shipping per piece: $36.14

Min. Order: 1 piece

(1 PCS) 12VDC Wired Home Security Protection Coal Natural Gas LPG Alarm detector Gas leak sensor switch NC/NO relay output

Ready to Ship

$5.20-$6.00

Min. Order: 1 piece