signal output: sine wave, triangle, square wave and integrator (selectable through jumper)signal frequency: about 1kHz (fixed)output level: adjustable from 0 to 100mVrms (LEVEL potentiometer)power supply: 9V battery (not incl.)dimensions: 56 x 40mm (2.2in x 1.6in)http://www.velleman.be/downloads/files/spotlights/digimagazines/kitcat2006_en/800/download/magazine.pdftehnički podaci:-Velleman MK105