Shed, garage, granny flat, studio or workshop
Someone’s at the shed. You’ll know first.
If your shed or outbuilding is out of earshot, Shed Alarm is the plain-English way to pick the right alarm: a siren, a phone alert, or a long-range sensor for a shed with no power or WiFi.
Answer two quick questions and we will point you at the simplest fix for your shed, or sort the whole thing for you.
The 30-second shed alarm chooser
Every shed is a bit different. This finds the simplest alarm for yours and points you to the people who fit it.
Three ways to know your shed is safe
Scare them off
A standalone battery siren mounts in the shed and sounds the moment it senses movement. No wiring, no phone, no monthly fee: the simplest deterrent.
Get alerted on your phone
A smart sensor, or a long-range one for a shed with no power or WiFi, sends the alert straight to your phone the instant something trips it.
See what’s happening
Want eyes on the place, not just an alert? Cameras you can watch live are a quick step up, and we point you to the team who fit them.
Walkthrough
One quiet night, minute by minute
Here is exactly how a shed alarm earns its keep: what the sensor sees, how the alert reaches you across a dark paddock, and why the night ends with nothing missing. Follow the timestamps.
the shed · out of earshot, not out of reach 11:47pmA ute slows at the gate
The shed is a hundred metres from the house and fast asleep, same as you. Tools, the quad, the welder: all of it out of earshot behind one padlock. Tonight somebody knows that.
movement inside the arc · tripped at 11:49pm 11:49pmThe sensor trips
A torch beam crosses the doorway and the motion sensor sees it instantly. A standalone siren would be screaming into the dark right now. The smart and long-range versions do something better: they start the alert on its way to you.
long-range radio to the house · months on one battery 11:49pmThe alert crosses the paddock
No WiFi at the shed? No power? The long-range sensor radios the alert to a small hub at the house on a battery that lasts months. If the shed does have WiFi, the smart sensor sends it straight over that instead.
- 11:50pmMovement at the shed. Doorway sensor tripped.11:50pmFloodlight switched on.11:51pmSeen. You are watching the app, wide awake.
push alert · while it is happening 11:50pmYour phone lights up
Movement at the shed, 11:50pm. You are awake, the floodlight is on a smart switch, and the dog is already at the door. You know while they are still deciding, not at breakfast when the padlock is in the grass.
lights on · logged 11:52pm · nothing missing 11:52pmThey leave empty-handed
A lit shed, a phone in a hand somewhere, and every reason to be gone. That is the whole trick: the shed stops being quiet and dark the moment it matters, and the timestamps are in the app if the police ever want them.
Who finds out, and when
Same 11:49pm trip, three different alarms. The bar is how long the shed stays helpless.
Run by installers, not a call centre
Shed Alarm is part of Alien IT, an Australian team that fits alarms, sensors and long-range gear for a living. We only recommend what we would fit at our own place, and if a job is better handled by one of our sister services, we send you straight there.
Shed alarm questions, answered
What is the best alarm for a shed?
It depends on power and distance. If the shed has mains power and WiFi, a smart motion sensor that alerts your phone is ideal. With no power or WiFi, a long-range battery sensor sends the alert without either. If you just want a deterrent, a standalone siren is the cheapest option. The chooser on this page points you to the right one in about 30 seconds.
Can I get a shed alarm with no power or WiFi?
Yes. A long-range (LoRa) battery sensor runs for months on a single battery and radios the alert to a small hub at the house, then to your phone. It is built for far paddocks and powerless sheds where WiFi never reaches.
Will a shed alarm alert my phone?
The smart and long-range options do. A motion or door sensor sends a push notification to your phone the moment it trips, so you know while it is happening, not the next morning. A basic siren just sounds on the spot.
Do I need a monitoring subscription?
No. These alarms alert you directly, with no monthly monitoring fee. If you would rather have a monitored or camera setup instead, we can point you to the right option.
Can you install it for me?
Yes. Shed Alarm is run by Alien IT, so once you know the right approach we can supply, fit and set it up so the alerts land reliably. Call 02 9707 0999.