Housegard Luma wireless siren, 230V incl. battery backup, white

Wireless siren in the Luma series offers dual warnings with a powerful 95 dB siren and flashing light, perfect for people with hearing or vision impairments. The wireless repeater extends the range of the Luma system and relays other alarm signals. The siren works both with and without the Luma Hub.Model: SF355You can connect up to 40 pcs. alarms together, wirelessly via 868MHz.Smart home function! Connect to smartphone via the Smart Life app. (Hub sold separately).4 hours battery backup in case of power failure.Quick installation. Mounts directly into a 230V socket.