External Mini Anti-shear Wired Siren

Features:
*With squealing alarm sound, this siren will not only alert the neighbors of the intrusion, but scare away the burglar out of your house immediately!
*No intruder will hang around when one of these sirens sounds! Anti-shear, once someone shears the wire, it will alarm.
*This piercing, anti-shear siren can be connected to door sensor and other sensors, to work with your alarm system.
*When the door sensor, PIR sensor, etc. is triggered, the alarm system receives alarm signal, then the siren alarms loudly.
*Novelty design, low power consumption.