Three kinds of sound alarm: ambulance / sound of police car / sound of fire engine
Using high quality ABS fire-proof material. Suitable to be used in office, hotel, restaurant and so on
The alarm will send out both loud sound and quick flash light to remind people escape from the fire
Selects two or the four-wire system wiring method, the main line end receives two main lines, not polarization, power source termination to DC24V power line
Built-in LEDs, super bright when send out alarm signal, effectively remind people flee from fire
