ELECTRONIC SIREN WITH LED
Categories : SERIES 12 SOLDERLESS STARTER KIT ,  SOLDERLESS STARTER KIT , 
Product description
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