Sonew 12V DC Sound Alarm, 110db Alarm Strobe Siren, Flashing Light Siren for Public Places Emergency Evacuation

Door alarm is Made of flame retardant ABS plastic, robust and Red and blue two colors for your selection STRONG STROBE LIGHT: Burglar alarm system' accessory is intelligent microcomputer control and stable performance. Receive alarm signals, alarm with strong sound and flash AUTOMATIC FLASH: The home alarm systems accessory connects the 12V power supply, automatic flash. You have to differentiate between positive and negative, from red to positive, from black to negative LOUDLY: Volume of house alarms security system accessory is 110 dB, so you can hear the alarm anywhere in the house SUITABLE VARIOUS OCCASSION: Burglar alarm system accessory is suitable for sentries, gates, roads, tunnels, airports, construction sites as seers. It can also be used as a photoelectric alarm output of an alarm host