Photoelectronic smoke detector 1)Can offer with DC type, AC type, both DC& ... type, wireless type 2)alarm sonority:>85 db (3m) Photoelectronic smoke detectorClassical model, CE, GS approved Specification: 1) Power:DC9V or ... ,220V6) Current:<25mA7) Alarm sonority:>85 db (3m)8) Working temperature:-10°C~40°C