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MULTIPURPOSE motion activated sensor chime door alarm mailbox alert retail bus... MULTIPURPOSE motion activated sensor chime door alarm mailbox alert retail business welcome doorbell cordless fall and Wander pet cat dog monitor alarm. Perfect for Caregivers It is perfect for the elderly or people with inconvenient behavior. It can... more

The following magnetic alarm entry door bell kits can only sound an alarm: -Al... The following magnetic alarm entry door bell kits can only sound an alarm: -Alarm Sensor -Alarm Bell+Alarm Sensor The following magnetic alarm entry door bell kits can choose to output music or alarm sound: -Music Sensor -Alarm Bell+Music Sensor -Alarm... more

Overhead Mounted Switch with Magnet Heavy Duty Roller Shutter Contact Magnet M... Overhead Mounted Switch with Magnet Heavy Duty Roller Shutter Contact Magnet Mounted on Bracket Wide Operating Gap 3 minimum 30-3/4 PVC 22AWG Cable with 21-1/2 armored sleeve more

Wireless Key Pad Alarm/ChimeFeatures:4 Digit pinMount to door or windowInstant... Wireless Key Pad Alarm/ChimeFeatures:4 Digit pinMount to door or windowInstant or delay settingsEntry chimeBattery operatedRequires 3 AA alkaline batteries (not included)Product Type: Entry Alarm;Alarm Key PadFunction: KeylessFinish: GrayHand Painted:... more

Current: 0.5A ; Voltage: 100V ; Power Rating: 10W; Action Distance: 10mm Cable... Current: 0.5A ; Voltage: 100V ; Power Rating: 10W; Action Distance: 10mm Cable Length: 25cm / 9.8"; Total Size: 16.5mm x 10.5mm/0.65" x 0.41" (L*D) This Recessed Door Contact Sensor works with any access control or burglar alarm system available NO means… more

Current: 0.5A ; Voltage: 100V ; Power Rating: 10W; Action Distance: 10mm Cable... Current: 0.5A ; Voltage: 100V ; Power Rating: 10W; Action Distance: 10mm Cable Length: 25cm/9.8"; Total Size: 17.5mm x 10.6mm/0.69" x 0.41" (L*D) This Recessed Door Contact Sensor works with any access control or burglar alarm system available N.C. means… more

Note: Door magnetic induction can only provide a switch signal, which can not ... Note: Door magnetic induction can only provide a switch signal, which can not directly load the power, nor directly connect the lamp! more

Product Description: Outdoor warning distance:10m Indoor warning distance:20m ... Product Description: Outdoor warning distance:10m Indoor warning distance:20m Induction speed:30ms Contact capacity:AV/ 30V/0.5mA Operating Voltage:12-24V Material:PC Size:7.5*4.9*2.5cm/ 2.95*1.92*0.98 1. Anti-glare up to 50 000 LUX built-in automatic... more

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Overhead Door Contact or Switch with magnet and bracket Heavy duty Track Conta... Overhead Door Contact or Switch with magnet and bracket Heavy duty Track Contact Sturdy polished aluminum die-cast housing Magnet mounted on adjustable bracket Wide operating 3 gap more

Home Security Infrared Sensor Alarm + Doorbell ChimeButton + Smart Night Light... Home Security Infrared Sensor Alarm + Doorbell ChimeButton + Smart Night Light Wireless Smart Home Security Alarm System 3 in1 Night Light Doorbell Infrared PIR Motion Sensor detector Alert with 52 ChimesCall Button and Keypad Features: 1. Home... more

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Do you still use the tradition doorbell which only is a doorbell? Do you want ... Do you still use the tradition doorbell which only is a doorbell? Do you want a doorbell also come with security sensor function and smart night light? Try our this Ring Wireless Smart Motion Sensor Alert System! Wireless Smart Compact Portable andamp;... more

Description: 1.NO means Normally Open:when the magnet separate the circuit is ... Description: 1.NO means Normally Open:when the magnet separate the circuit is not conductive( light on );When the magnet together the circuit is conductive ( light off ).When make order pls check carefully! 2.These are the door contact sensors that are... more

NO NC type designed for use with alarm systems. Great for use in family and fa... NO NC type designed for use with alarm systems. Great for use in family and factory window door. etc. Switch Type: NC(normal close type) the circuit is closed normally and that if a magnet comes near it the circuit opens. Switch Type: NO(normal open... more

Description: 1.NC means Normally Closed:When the magnet together the circuit i... Description: 1.NC means Normally Closed:When the magnet together the circuit is conductive( light on ); when the magnet separate the circuit is not conductive ( light off ). When make order pls check carefully! 2.These are the door contact sensors that... more

Features: - Self-adhesive easy to install and operate. - The 108 dB loud alarm... Features: - Self-adhesive easy to install and operate. - The 108 dB loud alarm prevents intruders from entering through your door/window. - Low battery warning when the battery needs to be replaced the LED will flash once per second. - 4 in 1... more

Description: 1.NO means Normally Open:when the magnet separate the circuit is ... Description: 1.NO means Normally Open:when the magnet separate the circuit is not conductive( light on );When the magnet together the circuit is conductive ( light off ).When make order pls check carefully! 2.These are the door contact sensors that are... more

Description: 1.NC means Normally Closed:When the magnet together the circuit i... Description: 1.NC means Normally Closed:When the magnet together the circuit is conductive( light on ); when the magnet separate the circuit is not conductive ( light off ). When make order pls check carefully! 2.These are the door contact sensors that... more

The Skylink GS-MT Wireless Garage Door Sensor will track the garage door opene... The Skylink GS-MT Wireless Garage Door Sensor will track the garage door opened or closed status and send a push notification to your Smartphone with any change in status. Simply place the sensor on the top panel of your garage door to be informed when... more