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5 Things to Consider When Buying Door/Window Sensors

Updated: May 26, 2021

Window and door security systems have contact sensors to detect their opening and closing. Securing your windows and doors is critical because it alerts the homeowners and emergency services when intruders attempt to break in. Smart sensors are highly sensitive and accurate, making them a reliable security essential.

Although window and door sensors work best when paired with a comprehensive security system, these devices can do a lot of good individually too. Here are five things to bear in mind when deciding to buy sensors:


There are four types of door/window sensors: wireless surface-mounted contacts, wireless recessed contacts, hardwired surface-mounted contacts, and hardwired recessed contacts. They all work similarly as each has a sensor and a magnet. The sensor is attached to the frame’s static section. Meanwhile, the magnet is positioned on the window or door’s moving section.

The magnet for first-floor entrances and windows must be within half an inch of the sensor. Place the sensor on the door’s stationary portion to ensure the door’s movement doesn’t damage it.

Decibel level

Sensors paired with a security system must trigger an alarm loud enough to deter burglars. It will draw attention, signaling something is wrong. Therefore, it’s good to routinely review the alarm’s decibel levels to make sure it’s as it should be. Smart security systems allow you to do this using an app on your smartphone.

Size and visibility

Large or bulky sensors are distinctly visible on windows and doors. They diminish the property’s aesthetic appeal and are clearly visible to intruders, who might try to disarm them. Hence, It’s more prudent to look for smaller designs that fit discreetly around the door or window frame without drawing too much attention.


Every home security gadget comes with a set of controls that allow homeowners to turn it on and off, deactivate it after accidental triggers, view the security camera footage, and check record logs. Usually, it’s a keypad or a touchscreen control panel near the main entrance. It makes it easy to arm or disarm the system on your way in and out of the house. Most smart systems also offer mobile app integration for remote access.

Installation method

You can call a professional for installation or do it yourself using the product manual. A wireless sensor system is simple to set up, as you don’t have to worry about drilling holes or soldering wires. But if you have a wired system, it’s best to seek professional help.

About Alarmco Smart Home Security

If you want to install door/window sensors in your house or office, Alarmco Smart Home Security, i.e., the best alarm companies, is your one-stop destination. We offer everything you need to turn your house into an impenetrable fortress, from smart thermostats to fire alarms and detectors. You can call us at 877.446.8100 for a customized home security package or get a quote.

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