- To adopt in control of Pulse Width Modulaltion (PWM)
Due to the little of regulation, the instrument could be obtain the stable screen of TV and acoustic fidelity.
- A compact design which need not select the installing place
The design become light and small of its appearance, no matter where it could be dispose simply and conveniently.
- To assemble a low battery warning alarm
There is a considerate design of battery, which enclosed herewith a warning alarm and prevented loop of low battery.