Door and window sensors can be more reliable, but it’s not always possible to fit them to a wooden shed door and doorframe or a garage side door without some modifications. Is there anything else worth looking out for? You might want to screw this one to your door and doorframe rather than rely on the adhesive pads supplied, but this one’s easy to fit, easy to use, hassle-free and noisy when you need it. What more could you want from a cheap shed alarm? The best garage and shed alarms you can buy in 2023 1. Yale Intruder Alarm Starter Kit: Best garage and shed alarm you can buy Key specs – Zone control: Yes; P hone call alerts: Yes; B attery-powered or wired: Wired panel, wireless sensors; V olume level: 100dB

We often forget that burglars aren’t only interested in what’s inside our homes; there are some tempting targets outside our main living area. Garages and sheds can contain bikes, power tools, lawn mowers, canoes and camping equipment, while many of us now have outside offices as well, with computers, monitors and printers up for grabs. Dialler alarms will also call a phone number when the alarm is triggered, to let you know that something’s up. Motion detectors, sometimes called Passive Infrared Sensors (or PIRs), detect the changes in infrared energy that occur when a warm body passes within range of the sensor.

Motion detectors and PIRs are great in that they can cover a big area, including multiple doors and windows, but it’s often hard to get the sensitivity right. If they’re too sensitive, they will activate when something passes by the shed window. If they’re not sensitive enough, they will only detect intruders when they’re nearly close enough to pull the alarm off the wall. The best motion detector systems get the balance right, and will even include ‘pet-safe’ technology so that a dog or cat won’t trigger the alarm, should one get into your shed or garage.