KIDDE wireless addressable analogue siren smartcell, white. completely wireless. 32 siren tones, 868 mhz two-way communication. anti-tamper locking mechanism, 3 er14505m batteries. output level 95 db(a), dimensions 110 x 72 mm (ø x d). weight 0.2 kg, colour white. wall mounting. cpr en54-3/13/25 certification