Replacement Alarm for FireAngel ST620 10 Year Sealed Battery Optical Smoke UltraFire ULLS10

This replacement alarm is for the discontinued FireAngel ST-620. It is manufactured by UltraFire and fits onto the original base plate using an adapter plate Simple twist-on installation with automatic activation when attached to the adapter plate Dimensions (H x Dia): ULLS10 Optical Smoke Alarm: 34 x 84mm. Adaptor Plate: 3.8 x 117mm Large combined test and silence button X-Profile detection chamber, designed specifically to reduce false alarms. End of life / low battery chirps can be silenced up to 10 hours CE marked and Kitemarked to BS EN 14604: 2005. Suitable for installations complying to BS 5839-6 Grade F1 Battery: 10-year sealed lithium battery. Warranty: 10-year manufacturer's warranty Please Note: The FHSAP adaptor plate is used for mounting the ULLS10 smoke alarm to an existing FireAngel ST-620 base plate – do not use the standard base plate included in the box with the ULLS10 smoke alarm as well. The standard base plate is only intended for use on its own to directly mount a ULLS10 to the ceiling rather than for replacing an ST-620, Weight: 0.3747858454 pounds, Manufacturer: UltraFire