This kit is designed on the principle of 2 transistors which can generate frequency when pressing and holding the switch for turning ON this circuit, then it gives out ademanding of single siren sound through its included speaker, and LED lights up, making it suitable for alarm-system device.

Technical Specifications

- Power Supply : 9VDC

- Current Consumption: 45mA.

- PCB dimensions : 2 x 1.5 in.

 

	Manual