Best Door & Window Alarms Guide & Reviews of 2021

Nest boasts awesome door sensors, all at a great cost. Nest Detect, in particular, can go on doors and walls and register movement from16 feet away.

The system triggers an alarm whenever the entry point is open, but customers can set up the Quiet Open mode for personal use. That way, it does not constantly sound the alarms when a family member leaves or enters a room.

This door sensor has a tamper-detection switch and blends into the interior environment quite nicely. It also comes with a cushiony two-year warranty.

While the Detect door alarm has prime features at a great cost, it also requires the Nest Secure alarm system starter pack. Consumers should keep that in mind when analyzing the total costs of everything.

This device is a simple peel-and-stick contact sensor that’s small and inconspicuous. It also syncs with any smart product that customers may have, such as a Z-Wave device. Again, this door sensor is a supplemental product that requires the larger Ring alarm system.

That said, once everything is connected, clients can receive instant updates even when they’re away from the property.

Those with a Z-Wave product can wirelessly connect the Ring window alarms up to 250 feet away. That said, they are not pet-friendly, so if Fido starts tampering with it, the siren will sound. This piece of equipment is meant for the Alarm Security Kit, which explains the very low cost.

SimpliSafe’s door sensors are available with any of the surveillance packages. Clients can add as many as they need. Since the cost is manageable, getting additional door alarms shouldn’t be too much of an issue.

A nice thing about these door sensors is that they continue to chime even when they’re disabled from the larger system. Moreover, the magnetic transmitter strips make set-up simple.

There isn’t anything particularly outstanding out this door and window alarm, but it boasts more flexibility and value than many competitors. For instance, it can trigger a 105-decibel siren, which is sure to keep intruders away.

Also, the magnetic strips can be up to two inches apart, which is much wider than the other door sensors on this list.

The devices from Vivint work with the larger overall surveillance system. This enables clients to automate everything. In other words, the gadgets stay in touch with the main security panel from 350 feet away.

The access sensor itself has a very sleek design and a five-year battery life. The wire-free design makes it simple to install it anywhere, but the professionals have to do it.

Vivint is a solid choice for those who want to have full home automation. The sensor requires a complete surveillance package to work, so that’s something to be aware of.

The expenses involved can be quite hefty since customers would need a monitoring package of about $40 a month.

Protect America’s systems are great for larger properties, but they’ll work for moderate-sized homes, too. The sensors have a magnetic field that sends a signal to the control panel whenever there’s a gap in the transmission range.

Remember that this brand requires a subscription plan. The base package comes with three sensors and starts at about $20 per month.

All of the sensors should work within 100 feet of the control panel. Also, this brand does a good job with automation and integration features, so families can customize their own smart homes.

The gadgets themselves are compact, but they are expensive, costing $60 apiece.

This Frontpoint door alarm triggers a loud siren whenever the magnetic strip is more than 0.75 inches from the transmitter. Customers should just be careful that their pets don’t accidentally set it off.

This door sensor is designed to work with the Frontpoint system as a whole. Therefore, it will function up to 150 feet from the control panel.

The pricing is on par with other competitors, which is great. Also, the door sensor comes pre-programmed to work straight out of the box. Batteries are included and last for up to six years.

There are even automatic defect alerts, so clients don’t have to worry about whether it’s working or not.

Customers can connect this door alarm sensor to the larger ADT system so the cameras can hone in on whoever sets the alert off. With that in mind, remember that the door alarms are supplements.

For example, the basic plan comes with three door and window sensors and has a monthly fee of $36.99. Still, this is a great deal and includes 2/7 professional monitoring.

As for the door sensors themselves, they are discreet and sleek and attach right to the frame. They connect to the entire system, sounding a powerful siren and sending mobile alerts the minute something goes amiss.

On the downside, strong winds or a pet could end up triggering a false alarm.

For less than $10, consumers can get a door alarm that will keep kids safe at night and deter burglars from breaking in. The GE door sensor is battery-operated and has an expected battery life of 10,000 hours.

Batteries are included, and the alarms are available on their own or in multi-packs of four, five, or 12. The affordability is great, and there’s no wiring to deal with, so it’s good for renters.

Each door and window alarm comes with a 120-decibel siren and a simple chime/off switch on the side. The convenient test button allows individuals to test the sound with one touch.

Just be aware that this is an indoors-only gadget, although it’s suitable for dorms, trailers, and other small spaces. There’s no wiring to deal with, plus the simple no-mess removal is ideal.

LifeShield is a collaboration with Blue by ADT. Customers have the option to purchase a pre-packaged set or to build their unique security systems.

No matter the number of door and window sensors they choose, they’ll receive a free month of professional monitoring. That said, the costs can add up quickly, so be aware of that.

LifeShield offers individual door alarms, which are sold separately from the window alarms. Each product costs $8.99 apiece, and pet-friendly motion detectors cost $29.99 each. It’s easy to see how this system could get expensive very quickly.

That said, each device syncs to the larger hub so that clients receive text alerts as soon as something goes wrong.

These door alarms come from a company that specializes in personal devices such as stun guns and pepper sprays. Therefore, the door and window sensors are standalone gadgets, so clients can incorporate them into any system.

The alarms cost about $5 each, and they also come in multi-packs of two or four.

The redeeming quality of these door and window sensors is the 120-decibel siren. This is sure to scare off intruders and anyone who tries to break into the property.

On the downside, the gadgets are battery-operated and won’t connect to an existing smart automation system.