FK1226

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 a demanding of single siren sound through its included speaker, and LED lighth up, making it suitable for alarm-system device.

Technical Specification

• Power Supply : 9VDC
• Current Consumption : 45mA.
• PCB Dimensions : 2 x 1.5 in.