KIDDE smartcell dual smoke/heat detector siren with combined flash (white vad), wireless. compact profile. 32 tones, individual addressing. bidirectional communication 868 mhz., fire indication led. anti-tamper locking mechanism. ceiling mount, 3 er14505m batteries. output level 93 db(a). colour white, dimensions 110 x 58 mm (ø x d). weight 0.2 kg. certification cpr en54-3/5/7/13/23/25