Kidde Firex Mains Powered Smoke Alarm or Heat Alarm with Back-up Battery
AirRadio AJ-762-R Connected Smart Smoke Alarm, Battery Powered Wireless Interlink and 10 Year Life, Fire Alarm Tested to EN14604 Listed,CE Certified,Smoke alarm rules to apply to all homes in Scotland : Amazon.co.uk:
Aico EI660iRF Multi Sensor Dual Optical & Heat Alarm with RadioLink+ Battery Powered - IE