* charging mode
*　Rechargeable battery 6V3.0AH
*　 Discharge time is about 4 hours
*　 Power failure emergency function
*　Wall hanging/handle
*　Analog AC power failure emergency test button
* charging indicator
*　Switch system selection
*　 Volume: 680 (L) * 80 (W) * 100 (H) mm
*　Package specification: 1*6 sets