Warranty 10 years | approvals: BSI certified to EN14604: 2005 (smoke) | BSI certified to EN50291-1: 2010 (carbon monoxide) | CE tested and certified. Model 10Sco | Power supply 9V battery supplied as standard | temperature range 0?C to 40?c | humidity range up to 90% relative humidity (RH) non-condensing | Alarm dimensions 145 x 145 x 45mm | Alarm weight 360g. The voice warnings given by this alarm are: "fire! Fire!" "Warning! Carbon monoxide" "Caution, carbon monoxide previously detected" "Hush mode activated" "Hush mode cancelled" "Low battery". Designed to be wall- or ceiling-mounted, this battery-powered unit is perfect for when space is limited but protection is paramount. It can be used in most locations throughout the home but check in in-pack guidelines for specific installation instructions. Battery-powered combination alarm that offers protection from the dual dangers of smoke and carbon monoxide in a single unit for added convenience - The voice alarm feature audibly announces which Danger has been detected.