If you have 3 alarms, Alarm 1, Alarm 2, Alarm 3, and 2 remotes, Remote 1, Remote 2. One alarm also can be paired with multiple remotes. Response in 200ms. Door/Window Security Alarm Kit. The double-sided stickers on the back allow you to easily paste this alarm kit onto any smooth surface.
eBay
Aqara Smart Vibration Sensor Zigbee3.0 Mini Glass Break Detection Alarm Monitor Built In Gyro For Home Safety For Xiaomi MI home
Aliexpress UK
Complete Starter Kit: Features a loud more 90 DB alarm unit (siren). The alarm unit is small but very loud. Power source Battery Powered. Noise level 90 Decibels.
eBay
Zigbee Vibration Sensor With Tilt XYZ Axis Detection Home Security Real-Time Motion Shock Alarm SensorFor Home Assistant Z2MQTT
Aliexpress UK
Features: 1. Easy and convenient to install. 2. Professional design, quick and sensitive response. 3. Immediately alarm while thieves pushing the door or window. 4. Suitable use at home, in office, in shop, etc. 5. One magnetic sensor can match with at most 8 remote controllers freely. 6. One remote controller could control several magnetic sensors. Magnetic Sensor: 1. Volume: 110dB 2. Color: White 3. Weight: 2.29oz / 65g 4. Material: ABS 5. Power Supply: 2 x AAA Batteries(not included) 6. Alarm Response Time: 200ms 7. Standby Time: 12 Months Remote Control: 1. Voltage: 12V 27A 2. Standby Current: 1uA 3. Working Current: 15mA 4. Standby Time: 12 Months 5. Remote Control Distance: 20m.
eBay
Xiaomi DUKA MT2 Thermohygrometer Alarm Clock Multi-function Temperature and Humidity Meter Sensor Indoor Clock Night Light Tools
Aliexpress UK
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).
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Xiaomi LED Alarm Clock with Backlight Battery Operated LCD Display Temperature Humidity Monitor Multifunction Home Sensor Tools
Aliexpress UK
Photoelectric vibration sensor with adjustable sensitivity. Low power consumption, tampering function, alarm indication Small size, convenient in use, elegant style, perfect decoration. 1 x Detector.
eBay
Tuya Zigbee PIR Motion Sensor 360° Rotatable Human Detection Security Alarm for Home Works with Alexa Google Assistant
Aliexpress UK
Home Security Keeping your home safe Easy to install and low maintenance, the Door and Window Security Alarm Sensor is perfect for securing your home. With its compact and stylish design, the alarm can be cleverly placed on a variety of doors and around any style of window in your home, providing you with top-notch security. DIY home security system. Many burglaries are through doors/windows, especially side doors, back doors and garage doors. Not only DIY door and window alarms, but also doorbell/pool alarms if children/pets Or visitors come/go, child safety or help inform you, and emergency alert systems for elderly/patients. Installation Instruction Easy installation - Just peel and stick.
eBay
HEIMAN Zigbee 3.0 Fire alarm Smoke detector Smart Home system 2.4GHz High sensitivity Safety prevention Sensor Free Shipping
Aliexpress UK
(NOTE: No built-in siren, but alert your phone.). Smart Switch DIY. Smart Wall Switch. (we don’t work on weekends).
eBay
Digital Alarm Clock with Indoor Temperature Light Sensor Battery Operated Backlight 12/24H Display for Bedrooms Office Desk
Aliexpress UK
SONOFF DW2 WiFi Wireless Door Window Sensor Voice Alarm Smart Scene. (NOTE: No built-in siren, but alert your phone.). Smart Plug. Smart Switch DIY. Smart Wall Switch. Smart Lighting. (we don’t work on weekends).
eBay
TAIBOAN WiFi GAS LPG Leak Sensor Alarm Tuya APP Control Safety Fire Security Detector Smart Home LCD Natural Gas Leak Detectors
Aliexpress UK