KIDDE smartcell dual smoke/heat detector and combined siren, fully wireless. compact design. individual addressing, flexible detection; smoke and/or heat. 32 integrated siren tones, 868 mhz two-way communication. alarm led. anti-tamper locking mechanism., 3 er14505m batteries. output level 89 db(a). ceiling mounted, white. cpr certification en54-3/5/7/13/25