Radio manual detector for manual alarm triggering in a mixed radio network of Busch smoke alarm®/heat alarm/CO alarm. For wireless networking of up to 20 radio devices. Visual status LED. Installation type: surface-mounted. Included in delivery: 1x reset tool, 1 x Plexi cover, 1 x seal. With built-in lithium battery. Battery life at least 10 years. Radio frequency: 868 MHz. Dimensions: 85 mm x 85 mm x 58 mm (H x W x D).