AC 220V/50Hz with 9VDC battery backup
·Photoelectric smoke chamber.
·Flash alarm indicator (red).
·Operating indicator (green).
·Test button for easy recommended monthly testing.
·Low battery signal.
·Safety clip feature, not allow mounting of smoke alarm without battery installed.
·Loud 85dB alarm signal.
·CE APPROVAL.
·Conforms to EN14604 standard.