Features:
1) Interal CPU control.
2) Advanced PWM technology for inverter output.
3) AVR function.
4) LOW current switch control technology to extend the life of the switch.
5) Thermal battery change technology ,convenient for the user's to change battery
(DH-500A/B,DH-500CA/CB)
6) Inner enquipped charger of constant current and voltage, Advanced battery
management and low voltage protection system
7) RJ45/11 for telephone, fax and modem circuit protection.
8) Smart RS232 interface for automatic file saving and power-off functions at your
computer
9) Advanced battery management system with automatic re-charging function.
10) Special protection against AC/DC overload and short-circuit protection against
inversion state with high reliability
11) Display by LCD
12) MicroChip control
13) Automatic voltage regulation
14) Emergency power backup protects your valuable data and computer hardware
15) Short circuit protection
16) Over charge & over discharge