. Dual LEDs for 360-degree visibility.
. With the photoletric light sensing principle, this kind of detector is activated more quickly, accurately and reliably, and there are no false alarm due to chemicals, exhaust gas, wind and exterior light .
. Detector has passed EMC test, which greatly eliminates false alarm caused by interference from nearby sources.
. Dual-LEDs display monitor and alarm; easy to identify the current status of the detector.
. Three-wires smoke detector is suitable for using with remote indicating Lamps and four-wire smoke detector is appropriate to use with any devices which require output relays, like security system etc.