1x Smoke Alarm. Easy installation: Product can be easily installed on walls or ceilings without the need for professional technicians or any wiring. It can be used normally through simple installation.
eBay
Ewelink ZigBee Door And Window Sensor Smart Home Security Wireless Burglar Alarm Door Contact Sensor Detector Works With Alexa
Aliexpress UK
10km Electric Fence Energiser 12v Battery Powered 1.5J-2J Horse Fencing Kit HOT. ✅Effortless Power Solutions: This Smoke Detector operates on convenient, replaceable AA batteries, eliminating the need for complicated hardwiring.
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for Touch Door Knob Entry Alarm Alert Security Anti Theft(without battery)
Aliexpress UK
2x Smoke detector. Sounds a loud 85 dB alarm. Optical smoke sensing technology detects slow smouldering fire. Battery life: 2 x 1.5 V AA battery（batteries are not included）. Large central test and silence button feature.
eBay
20pcs High capacity AA Disposable Dry Battery AA 1.5V Battery for camera calculator alarm clock mouse remote control
Aliexpress UK
The KF20 includes a 9V alkaline battery backup, while the KF20R features a self-charging long-life lithium backup. Up to 24 units can be connected for comprehensive coverage. 🔥Kidde Firex KF20 / KF20R Mains-Powered Optical Smoke Alarm.
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For swing sliding Gate Opener/Barrier Gate Signal strobe flashing lamp DC 12V 24V/AC 220V LED gate flashing light Alarm Lamp
Aliexpress UK
Long service life and safety certification compliant with EN 14604. Test & hush button to easily check operation or silence false alarms.
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ZigBee Smart Water Sensor Leak Detector Flood Water Leakage Alarm EWelink App Remote Control Support Home Assistant Zigbee2mqtt
Aliexpress UK
SMARTWARES OPTICAL SMOKE ALARM. The Smartwares 10.044.62 (RM520) is a high-quality optical smoke detector designed to provide early warning in the event of a fire. The smoke alarm can only be mounted when the battery is inserted due to the security pin.
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Tuya Smartlife Home Black Mini Camera Night Vision Two-Way Audio Magnetic WiFi Human Alarm Built-in Siren for Home Cloud Storage
Aliexpress UK
Sensor Type: Smoke Detector. EASY INSTALLATION: The fire alarm can easily install with mounting bracket. No hardwired anymore and you can install it wherever you want. SMALL BUT ACCURATE: The smoke alarm adopts photoelectric technology to detect smoke.
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Rechargeable 6V/12V Battery 5Ah/7Ah/8Ah/12Ah Long-lasting Lead-acid Battery for Children's Car,Security Alarm,Sprayer,UPS
Aliexpress UK
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Tuya Zigbee Door Window Sensor Alarm Detector Burglar Magnetic Contact Open Close Alexa Google Smart Life Smart Home Security
Aliexpress UK