The Wireless Outdoor Siren has been tested at 119db high output alarm. It has 3 alarm functions siren + signal light, signal light only, siren only, delay timer 0-10s. The Siren can also be used as a stand-alone siren by connecting up to 8 additional sensors, HA-MOTION, HA-SENSOR, HA-MOTION-OD & EWD-1 (thru the Motion & Sensor).
To use the siren as a stand-alone system you will need to purchase an remote control (HA-REMOTE) to arm and disarm the siren or use it as a panic alarm. Once one of the mentioned sensors above detects a trigger or the panic button is pressed on the remote control, the siren will sound a siren alarm. The siren has an automatic shut-off. Every 90 seconds the alarm will reset and be ready for the next alarm trigger.
The siren comes with a power adapter and wall mount. It will work with 4 AAA batteries as backup in case of power failure.