The Velleman MK105 Signal Generator Kit has signal output: sine wave, triangle, square wave and integrator (selectable through jumper).
Also: signal frequency: about 1kHz (fixed) and output level: adjustable from 0 to 100mVrms (LEVEL potentiometer).
Specifications:
- power supply: 9V battery (not incl.)
- dimensions: 2.2" x 1.6"