Car doors alarm sensor in comparison

How it works - Koostone Wireless Door Chime comes with 2 door window sensors and 1 receiver, and each sensor can set a separate sound with the receiver, that means you can know the front door or the back door or the mailbox opens without needing to go to see it. The sensors will detect the door window, and will be triggered to send out a signal when the door window opening. Receiver will receive the signal and alerts. It can be used as door chimes when door opens for business.

52 MP3 Door Chime & Mute -- This wireless door entry alert for shop has 5 levels of adjustable volume from 0-110 dB. Offer 52 elegant mp3 music from the traditional"Ding Dong" to various well know chimes. Memory function Keep the previous setted tune after re-plugging it.

Reliable Security The infrared detection range of door sensor alarm is adjustable, Detection distance 6-26feet 2-8m), This rotable van alarm detection angle up to 120 degrees . Which can detect any movement within the detection zone to keep your alarm system for home security.

This is a set of magnetic detection switch used to protect doors and windows for the most part. Easy to install and use. A good replacement for old contacts. Simple to install without problems

Easy to Install The door sensor chime and receiver are paired already,Just plug the receiver into standard outlet, tear the double-side adhesive tape of the entry alert chime and stick them to any door or window, The Magnetic Door Alarm is waterproof to IP55 and can withstand inclement weather. Ensuring perfect performance when working outdoors

Long use without changing batteries - The X1 siren is powered by 3 x AA batteries for extended use (up to 12 months). It has an indicator light that allows you to check the status of your alarm system. An audible signal warns you of low batteries.

Authentic products carry Electrotec Security Supplies branding.

PORTABLE DEVICE - A lightweight and portable intruder alarm, perfect for travel. The unit can be easily moved to any room within your property.

The PIR sensor has been designed and optimised for performance and battery lifespan so users are not having to frequently change batteries - Motion sensor has a built in low battery indicator

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Home security alarm Magnetic door and window alarms emit a loud 130-decibel siren when doors and windows are suddenly opened. It prevents your children from sneaking out the door or intruders from entering

REMOTE CONTROLLER The remote control can be armed at leave home, OR disarmed at back home, and the SOS button can directly trigger the alarm in emergency situations