詳細規格及用途描述
					
						- 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.