This unit is a Call Point / Break Glass with a Sounder / Siren built in to it. Standalone Wireless Battery Operated Fire Alarm System. No drilling or fixing. Battery operated so no wiring. To test it you insert the black key and turn it clockwise 90 degrees (pics 5/6).
eBay
PGST 105 4G Wireless Home Alarms System,Wireless WiFi Home Security System with Door & Motion Sensor App control work with ALexa
Aliexpress UK
The Howler Wireless Battery Fire Alarm System is a standalone site alert unit manufactured in Taiwan. This unit provides a reliable and effective way to detect and alert users in the event of a fire, ensuring safety and security on construction sites, industrial facilities, or residential properties. With its wireless design and battery-operated functionality, this fire alarm system offers flexibility and convenience for various applications.
eBay
PGST-103 Graffiti Alarm System, 4G Secure Home WiFi Smart Home Alarm, Wireless Security System Device, Controlled by Smart Life
Aliexpress UK
The Twinflex Weatherproof Manual Call Point (MCP) is IP65 rated and allows for user activation of the fire alarm system. Once operated the device latches into the alarm position and requires manually resetting via a special key. This device is compatible with the range of Twinflex Fire Alarm Control Panels and comprises a 2-wire zone-powered Manual Call Point (MCP). This device may be installed on the same zone as the Twinflex Multipoint detector/sounder and other associated Twinflex devices.
eBay
KERUI G12 Wireless Tuya Home Alarm System Kit WiFi GSM Home Security System with Door and Motion Sensor Smart Life App Control
Aliexpress UK
The Zetller Fire Alarm System is a reliable and efficient solution for protecting businesses and industrial premises. With its brand reputation for quality and durability, this fire alarm system ensures that your property is safeguarded against potential fire hazards. Easy to install and maintain, this system provides peace of mind knowing that your business is safeguarded against unexpected fires. Trust in the Zetller brand for professional and effective fire protection equipment.
eBay
Wireless Home Alarm System Phone 4G Wifi Tuya Smart Home Child Safety protection Anti-theft Camera automation Residential alarm
Aliexpress UK
Used EMS Firepoint 5000 panel and devices as job lot. Parts can be sold separately.
eBay
Tuya Smart WIFI Wireless Security Alarm System Alarm Kit Home Burglar Motion Door Sensor Compatible Google Home Alexa
Aliexpress UK
Network：RF. Static Current：30mA. input power：3.3V-5V. remote distance：50-200m. Frequency：433MHZ.
eBay
Wifi GSM Alarm System Home Wireless Security Burglar Alarm Kit Door Open Motion Sensor Smart Life Tuya App Control Suit Alexa
Aliexpress UK
FIRE ALARM. We are here to help and will do our best to resolve any issues. We appreciate your understanding.
eBay
Tuya smart Alarm System Security GSM WIFI Alarm System for Home Wireless Security Alarm House Smart Life App Control Work
Aliexpress UK
The internal strike type electric bell ensures that the alarm reaches further, making it ideal for large spaces. This internal strike alarm bell is suitable for various settings, making it perfect for schools, offices, and residential buildings.
eBay
KERUI Tuya Smart WIFI GSM Alarm System Works With Alexa Home Security Wireless 433Mhz Burglar Alarm Door Window Sensor Detector
Aliexpress UK