- Removable front board for easy maintenance.
- Easy-to-clean front board is able to avoid dirt attached.
- High luminance and long life span LED.
- Independent visual & audible indication for zone open/short fault.
- Independent visual & audible indication for AC power & battery fault.
- Visual & audible indication for sounder short circuit fault.
- Buzzer silence with 3-mode operation feature.
- Accurate supervision circuit for battery.
- Short circuit = Alarm feature ( selected by JUMPER applicable for manual call point w/o resistance).