NE555 Waveform Generator Square Saw Triangle and Sine PCB Kit
 
Product Information

PCB size: 45mm x 52mm 3 Mounting Holes
Connection is made via Pins Provided
Output Frequency is around 1KHz
Adjustable Voltage output is made by Carefully Adjusting the onboard pot.
8~12V DC Supply
Four Waveform's are Avaliable Simultaneously, Square Saw Triangle and Sine
Instructions are in chinese but there is enough information to easily Build this Kit.
Obviously you need to be able to solder and identify the Components and Values.
Fun Easy to Build Kit
 
There is information on the net to help if you get stuck
 
1x PCB Waveform Kit Supplied