Open the door and see if the siren sounds. 1/2/4/10X Alarm Kit (alarm unit & magnetic sensor). Sensor type: alarm. Alarm type: sound. Fix the host to the door / window with double-sided tape. (Battery is not included).
eBay
KINJOIN DC12V 60kg Door Gate Escaping Room Lock/Electric Magnetic Solenoid Cabinet Case Locks For Office Door Access Control
Aliexpress UK
This alarm is the perfect way to protecting your home or place of business against theft. The alarm function is triggered using a magnetic sensor or using the provided remote control. You can arm, disarm, sound alarm and change to the doorbell function using the remote. This is ideal for shops and offices. The 110 decibel alarm is perfect on windows, doors and sheds to protect your goods. Features: 100% brand new and high quality Super loud 110 dB alarm Convenience in installation, just peel and stick Super environmental suitability and stability Dustproof and insect prevention Easily mounted by adhesive Ideal entry warning for homes, apartments, mobile homes and more Packing included: 3 x Magnetic Sensor 3 x Magnetic Stick 3 x Remote Control 3 x User Manual.
eBay
Magnetic Washer Door Prop-Stabilizer for Front Load Machines-Easy-Install, Flex Design-Fits Most Washers & RV Laundry Doors
Aliexpress UK
Black Magnetic Switch Wiring - 2 Sets. Why Choose Our Magnetic Switch Wiring?. With its exceptional performance and versatility, it stands out as the premier choice for those serious about safety. Easily Defined Connections: Color-coded cables—Blue for common; Black for NC; White for NO—ensure straightforward installation.
eBay
1pc Magnetic Washer Door Prop-Stabilizer for Front Load Machines-Easy-Install, Flex Design-Fits Most Washers & RV Laundry Doors
Aliexpress UK
This alarm is the perfect way to protecting your home or place of business against theft. The alarm function is triggered using a magnetic sensor or using the provided remote control. You can arm, disarm, sound alarm and change to the doorbell function using the remote. This is ideal for shops and offices. The 110 decibel alarm is perfect on windows, doors and sheds to protect your goods. Features: 100% brand new and high quality Super loud 110 dB alarm Convenience in installation, just peel and stick Super environmental suitability and stability Dustproof and insect prevention Easily mounted by adhesive Ideal entry warning for homes, apartments, mobile homes and more Packing included: 2 x Magnetic Sensor 2 x Magnetic Stick 2 x Remote Control 2 x User Manual.
eBay
Magnetic Washer Door Prop-Stabilizer for Front Load Machines-Easy-Install, Flex Design-Fits Most Washers & RV Laundry Doors
Aliexpress UK
There are two types of reed switches: "normally open" reed switches and "normally closed" reed switches. A normally closed reed switch is closed when not near a magnet; when a magnet approaches it, the normally closed switch will open.
eBay
1pc Magnetic Washer Door Prop-Stabilizer for Front Load Machines-Easy-Install, Flex Design-Fits Most Washers & RV Laundry Doors
Aliexpress UK
This surface mounting Door Contact is very handy, not only can you fix them to traditional wooden and UPVC doors, you can also use them to protect windows and even garage doors!, They are constructed of plastic and have an operating gap of 20mm. Silver screw terminals indicate alarm circuit, Brass screws are used for terminating a tamper circuit or spare cables. Designed to be added Intruder Alarms, CCTV, Air Conditioning Units or any system that requires a NORMALLY OPEN contact (going closed circuit when the contact is seperated) Main Features: Plastic construction NORMALLY OPEN going CLOSED in alarm (when contact is seperated) Silver terminals denote alarm circuit Brass terminals for termination / tamper * If you are unsure is this will work in your on your exist.
eBay
3PCS/set Hinge Heads Cat Magnetic Resin Cat Gargoyle Door Hinge Pin Heads Little Kittens Figurines Door Hinge Magnet Topper
Aliexpress UK
This alarm is the perfect way to protecting your home or place of business against theft. The alarm function is triggered using a magnetic sensor or using the provided remote control. You can arm, disarm, sound alarm and change to the doorbell function using the remote. This is ideal for shops and offices. The 110 decibel alarm is perfect on windows, doors and sheds to protect your goods. Features: 100% brand new and high quality Super loud 110 dB alarm Convenience in installation, just peel and stick Super environmental suitability and stability Dustproof and insect prevention Easily mounted by adhesive Ideal entry warning for homes, apartments, mobile homes and more.
eBay
Minimalist Handleless Flat Lock Bedroom Magnetic Recessed Door Handle Silent Push Pull Black Invisible Slide Bathroom Door Lock
Aliexpress UK
For Construction: Built from ABS material, this magnetic switch is not only robust but also designed for concealed mounting,long-lasting use while maintaining a discreet profile in your security setup.
eBay
Magnetic Washer Door Prop-Stabilizer for Front Load Machines-Easy-Install, Flex Design-Fits Most Washers & RV Laundry Doors
Aliexpress UK