The detectors, combining cross-scanning and area detecting, gains a
national patent. * Supporting on-the-spot alarming.(That is, not
need use control panel but use siren to connect with sensor to
alarm. )*Built-in buzzer indicator.*Separate swivel
bracket.*Separate anti-tamper output. Now the products are used worldwide by professional installers and
service companies to protect individuals and properties in
residential, commercial, industrial, institutional, governmental
and military environments.