Sound index: 120dB sound. Output power: 15/20W. Sound pressure: 110/+3dB/lm. Transmission rate: 3H2 increase or discrete 10%. Color: see picture.
eBay
1/3/6pcs Wireless 433MHz Magnetic Door Sensor Door Window Two-way Open / Close Detector for Home Security Alarm Systems
Aliexpress UK
Horizontal Definition: 1080P. No one can access your information without your permission. Image Sensor: CMOS. 1 x Mounting Base. If you are satisfied with our service, pls. Material: ABS.
eBay
KERUI M525 Wireless DoorBell Burglar Alarm 32 Songs Optional 500ft Door Chime Home Security Welcome Smart Anti Theft Doorbell
Aliexpress UK
Multi-purpose Suitable for various types of doors windows (sliding/crank/hung....doors and windows ), cabinets, and drawers... Real-time State Protection Immediately alarm while thief pushing the door or window. Response in 200ms. Triggered immediately Alarm will be triggered immediately once you separate two parts.110 db loud alarm helps deter intruder and possibly notifies neighbors/homeowner, also helps notify you if visitors/children/pet or others are coming/going when you are at home. Easy Installation The double-sided stickers on the back allow you to easily paste this alarm kit onto any smooth surface.
eBay
KERUI Wireless 433MHz D025 Window Door Sensor Magnet Detector For W181 W184 W204 Home Security Alarm System Burglar An-theft
Aliexpress UK
1) 8-chord music chip and 40mm loud speaker for pleasant and louder alerts Remote transmission range up to 280m/ 918ft in open space. 2) 4 independent LEDs to distinguish sensing zones, with the option to synchronize sound alerts 3) 5 stages adjustable volume from 113 ~ 25dB. 4) Infrared + microwave radar composite dual detection for lower false alarm rates 5)Added silent and vibration reminder.More privacy,no disturbance ,vibration reminder for discreet alerts 6)Expandable.The receiver can learn from up to 32 wireless sensors like PIR motion, magnetic or vibration sensor as well as up to 8 remote controllers. 7) Low battery indication. Both the sensor and receiver can be powered by battery or plugged into a USB interface. 8) IP66 Waterproof ideal for outdoor use.
eBay
Zigbee 3.0 Door Window Sensor With Brightness/Vibration Sensor Smart Home Security Protection Alarm Door Open /Closed Detector
Aliexpress UK
(No app alerts without wifi).
eBay
KERUI M5 32 Songs Wireless PIR Motion Sensor Door Bell Shop Visitor Alert Chime Alarm Burglar Doorbell for Office/Home Security
Aliexpress UK
Utilises advanced infrared detection technology. The detector sounds the alarm when people pass by. Do not install the alarm in direct sunlight. Low battery warning function to remind you that the battery needs to be replaced.
eBay
Aqara Water Leakage Sensor Water Leak Detector Sensor IP67 Smart Home Remote Alarm Security Soaking Sensor For Xiaomi mijia App
Aliexpress UK
DIY Wireless Infrared Motion Detector Alarm System. Why Choose Our DIY Motion Detector Alarm System?. Don’t compromise your security. Power Source: Battery,Wall Plug-In,DC Compatible With: Motion Detector Model: Motion Sensor Alarm Connectivity: Wireless.
eBay
Tuya Zigbee Door Sensor Window Entry Sensor Security Burglar Door Sensor Alarm Smart Life Magnetic Door Sensor Alexa Google Home
Aliexpress UK
Solar Charging: 45° Angled Solar Panel, Efficient Absorption Of Solar Energy, Super Strong Standby. Refillable Pilot Watercolour Brush Pens Water Colour Painting Pen Brushes 6pcs d. 7" Flexible Air Tyre Valve Extension Adaptor Motorcycle Car Tire Stem Extender f.
eBay
KERUI Wireless 433MHz Window Door Magnet Sensor Detector For KR-W181 W184 W204 Home Security Alarm Systems Burglar Anti-theft
Aliexpress UK