![BRK 770MBX Hard Wired Mains Powered Ionisation Smoke Alarm with 9V Battery Back-up – Switch My Sockets BRK 770MBX Hard Wired Mains Powered Ionisation Smoke Alarm with 9V Battery Back-up – Switch My Sockets](https://www.switchmysockets.com/wp-content/uploads/2016/12/untitled_1_2-1.jpg)
BRK 770MBX Hard Wired Mains Powered Ionisation Smoke Alarm with 9V Battery Back-up – Switch My Sockets
![Need replacement smoke alarm. Current model (BRK 670MBX) discontinued. Do I *really* need to replace all (as per alarm manufacturer guidelines)? Can I not just wire up generic alarm to the circuit ( Need replacement smoke alarm. Current model (BRK 670MBX) discontinued. Do I *really* need to replace all (as per alarm manufacturer guidelines)? Can I not just wire up generic alarm to the circuit (](https://preview.redd.it/9r2qstsfu2781.jpg?auto=webp&s=8e860b3cc4a3a7cb9732ddf0affafa3b4366d797)
Need replacement smoke alarm. Current model (BRK 670MBX) discontinued. Do I *really* need to replace all (as per alarm manufacturer guidelines)? Can I not just wire up generic alarm to the circuit (
![Amazon.co.uk:Customer reviews: BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup Amazon.co.uk:Customer reviews: BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup](https://m.media-amazon.com/images/I/71f+vS6WChL._CR0,204,1224,1224_UX256.jpg)