Description : 
1. Auto / Manual Charging operation
2. Ammeter
3. Main power indicator
4. Charge indicator
5. battery full charge indicator
6. on/off switch
7. 240V fuse
8. External Sound Timer Controller
9. Battery 12V (ensure that connected in right terminal +---+, - --- -)
10. Main input AC 240V
11. To External Sound Amplifier
12. To Internal Sound Amplifier
13. Reset Circuit Breaker – Reset over current protector
Function:
- To provide continuous power to sound amplifier in case there’s a blackout
- To charge the backup battery
- To control the operating time of the external sound amplifier
