Stark Wired Outdoor Alarm Siren ST-6107

Two ways of triggered alarming, and high level or low-level trigger, respectively available for a variety of different alarm host.
LED flashing indicating different way when Standby and alarm status.
1 sound or 6 sounds for optional.
Can choose acousto-optic alarm prompt alarming when AC is off.
Can choose light alarm notice when standby status.
High loudness alarm sound, flashing lights, a strong deterrent.
Built in 1.2Ah /12V lead acid battery, can stand for more than 8 hours.
The built-in balance device, convenient to installation in horizontal direction.
Preventing the siren move and outside tamper switch design.