Protect your home from carbon monoxide and fire dangers with this twin pack of alarms. FireAngel design their smoke and CO detectors in-house and rigorously test them to ensure the highest standard of protection for your family and home. Suitable for homes in England, Wales and NI. Not suitable for homes in Scotland.CO Alarm - H - 62mm, L - 119mm, D - 38mm. Product weight - 128g. Supplied with 2 x AA Replaceable Batteries. Suitable for domestic premises including static and mobile homes, caravans, motor caravans and boats. Kitemark approved for peace of mind.Smoke Alarm - L - 89.5mm, D - 35.8mm. Product weight - 68g. Supplied with 1 x 9V Replaceable Battery. Features: The optical smoke alarm works by 'seeing' smoke as it enters the alarm - making it perfect for slow burning fires where there is thick white smoke The carbon monoxide alarm will detect, and provide a warning to, low levels of CO, and will provide a ventilate alert as this increases Pressing the large test buttons on both