
Best selling Burglary protection + Alarm systems
Here's a ranking of the best products in this category. To give you a quick overview, we've also added some key information about the products.
1. Ring Alarm door/window contact (Gen 2) Duopack
The alarm door/window contact easily connects to your alarm base station and features a removable slim magnet for easy installation on any door or window frame in your home. Choose between audio or mobile notifications and be the first to know when your doors or windows are opened. If the system is in home mode or away mode and someone tampering with the door/window contacts, the alarm will be triggered. Pack of 2.

2. Ring Alarm (Gen 2) Starter Security Kit
The 5-piece alarm starter set (Gen 2) is the ideal introduction to protecting your entire home. Whether house or flat: Ring Alarm is quick to install, easy to use and can be fully customised to your home and your needs. Welcome to your safer, smarter home. Ring Alarm can be easily customised to your needs and conditions. Simply connect the Ring base station to a power socket, connect your components, set up your account in the Ring app and control Ring Alarm completely via the keypad or the Ring app. Everything you need for commissioning is included in the scope of delivery. Receive real-time notifications on your smartphone or tablet as soon as someone enters a room, opens a window or triggers the siren. Easily change your alarm modes, synchronise all Ring devices with the app and monitor them via a central, user-friendly dashboard. Are you travelling but forgot to set your alarm? No worries. With Ring, you can activate or deactivate your Ring Alarm via the free Ring app wherever you are.
Get even more out of Ring Alarm! With a suitable Ring Home subscription, your Ring alarm system will stay online even if the internet connection fails. You can also get help in an emergency, activate and deactivate Ring Alarm from anywhere and much more. When you buy a Ring device, you can test Ring Home for 30 days free of charge. A suitable Ring Home subscription is required to use certain functions.
The starter set includes the following products:
- Ring alarm base station
- keypad
- Motion detector
- Door/window contact
- Signal amplifier

3. Satel SP-4001 R
Satel SP4001 R optical-acoustic outdoor siren red 120dB with metal inner cover
The SP-4001 signal device alerts to alarms through acoustic and optical signaling. The siren is suitable for outdoor installation and can be operated together with an alarm system.
- Acoustic signaling via the piezoelectric transducer
- Three selectable types of acoustic signaling
- Optical signaling using super-bright LEDs
- Electronics protected against weather influences
- Tamper protection against:
- Opening the housing
- Detaching from the mounting surface
- Inner cover made of galvanized sheet metal
- Housing made of impact-resistant polycarbonate with very high mechanical strength
- Also available in blue and orange upon request.

4. Ajax Indoor siren 81 - 105 dB black
The Ajax HomeSiren is a wireless indoor siren specifically designed for use in alarm systems. With a volume of up to 105 dB, it provides effective protection against break-ins and unwanted access. The siren operates in the frequency range of 868 to 868.6 MHz, making it ideal for integration into smart home systems. It is powered by two CR123A batteries, which ensure a lifespan of up to five years. Its compact design and lightweight make installation easy and flexible. The HomeSiren can be conveniently controlled via an app, allowing for user-friendly operation. With an IP50 protection rating, the siren is also protected against dust, enhancing its durability. This siren is a reliable solution for anyone looking to make their home safer.
- Wireless connection for easy installation
- App control for user-friendly operation
- Volume of 105 dB for effective alerting
- Battery operation with a lifespan of up to 5 years
- IP50 protection rating for additional dust protection.

5. Ubiquiti UP-Sense
Ubiquiti Protect Smart Sensor 3 Pack. The UniFi Protect Smart Sensor is a battery-powered intelligent multi-sensor that detects motion and environmental conditions. The sensor transmits sensory data and alerts to the UniFi Protect ecosystem via Bluetooth.
Features:
- Motion sensor (maximum range 5 m / 16 feet)
- Magnetic entry sensor for opening/closing doors or windows
- Accelerometer for opening/closing garage doors
- Temperature sensor
- Humidity sensor
- Ambient light sensor
- Alarm sound sensor (recognizes UL217 and UL2034 alarm patterns)
- Water sensor to detect leaks and flooding (requires water sensor adapter accessory, only available in 3-pack for general release)
BLE connectivity from indoor access point (recommended range 15 m / 49 feet, power varies depending on environment).

6. Homematic IP Outdoor alarm siren
The Homematic IP outdoor alarm siren provides reliable acoustic and visual alarm notifications within the Homematic IP smart home system. The wireless alarm siren can effectively signal break-ins or other events both audibly and visually. For this purpose, the outdoor siren is equipped with two powerful piezo speakers and prominent signal LEDs, all housed in a weatherproof enclosure with an IP44 protection rating. The alarm can be triggered, for example, by a Homematic IP motion detector or a Homematic IP window and door contact. Thanks to the direct connection between the devices, the alarm activation works reliably even in the absence of an internet connection or in the event of a failure of the Homematic IP access point or the central CCU2/CCU3. Additionally, the siren features a tamper contact that triggers the alarm in case of unauthorized disassembly attempts. Thanks to its sustainable power supply via a solar cell combined with a backup battery, no separate power supply is needed for installation. This allows the alarm siren to be mounted in hard-to-reach locations. The battery ensures reliable operation even at night or on cloudy days. Furthermore, the siren can also be recharged via the micro-USB port if needed.

7. Philips Hue Secure Contact Sensor
The Hue Secure contact sensor gives you peace of mind, both at home and on the go. Place it on doors, windows, cabinets, safes, or elsewhere using the included self-adhesive backing. When the object with the contact sensor is opened, you will receive a notification or the light will turn on.

8. Hoppe Fenstergriff ConnectSense schwarz abschl
The eWindow handle ConnectSense reliably detects attempted break-ins at the window and reports them to the smart home central. Additionally, it recognizes and reports both the position of the handle (closed, tilted, open) and the position of the window sash (closed, open).
By constantly comparing the positions of the handle and the window sash, it accurately determines whether a window is actually open or if the handle is simply in the open position without the window sash being moved. The eWindow handle ConnectSense offers extensive features for monitoring the window states in the building – potentially even while on the go through a smartphone notification.

9. Hoppe Fenstergriff ConnectSense weiss abschl.
The ConnectSense eWindow handle reliably detects break-in attempts on the window and reports them to the Smart Home control centre. In addition, both the position of the handle (closed, tilted, open) and the position of the window sash (closed, open) are detected and reported.
Due to the constant comparison of handle and window sash position, it is precisely detected whether a window is actually open or whether only the handle is in the open position without the window sash having been moved. The ConnectSense eWindow handle offers extensive functions for monitoring window conditions in the building - if necessary, even while on the move via a smartphone message.

10. Homematic IP Hmip-Swdo
The Homematic IP window and door contact is part of the Homematic IP smart home system and reliably monitors doors and windows. The innovative sensor does not rely on conventional magnetic contacts but instead uses a sophisticated optical sensor. This eliminates the need for an additional magnet, reducing installation effort. The built-in infrared light barrier monitors the door or window and detects whether it is open or closed. Within the Homematic IP system, the small sensor performs multiple tasks. Firstly, it automatically reduces the heat supply during ventilation by informing the Homematic IP radiator thermostat as soon as a window or external door is opened. Particularly practical is the option to define a reporting delay for frequently used doors to avoid constant opening and closing of the radiator valves. Secondly, the sensor reliably monitors access to your home when you are away. When the alarm mode is activated, the Homematic IP siren can be triggered in the event of unauthorized window opening. Additionally, a warning notification in the form of a push message is sent to the user via the app, allowing them to respond promptly to the dangerous situation. The small, 30-gram sensor operates so efficiently that it can run on a single AAA battery for about two years. When the battery capacity is low, the Homematic IP app will notify the user. Its lightweight design allows for reliable attachment using double-sided tape, which comes with an additional brown cover cap and a reflector foil. If the window or door material does not permit tape attachment, the two tiny screws included can be used instead.
