Portable --- Small size, powered by DC 9V, easy and portable for use.DDS frequency range --- 1Hz-65534Hz, high-speed frequency () output up to 8MHz.Adjustable --- DDS signal amplitude of the offset amount can be adjusted separately by two potentiometers.Wide DDS signals --- sine ve, square , sawtooth, reverse sawtooth, triangle , the ECG and noise .Easy Use --- LCD display for clear reading, intuitive touch buttons. The automatically restore the last used configuration.Function:UP output waveform selectDOWN output waveform selectLEFT output frequency -RIGHT output frequency +STOP / START the output stop / start"UP" key waveforms order:ECG: electrocardiogram (in the OFF state, the "left" and "right" keys to set the output frequency. Middle button start, all of the following waveform set)Rev Sawtooth: reverse sawtoothSawTooth: sawtoothTriangle: triangle Square: square Specifications:Display: 1602 LCDSection into the Value: 1, 10 , 100, 1000, 10000 HzOffset: 05pp-5VppAmplitude Amount: 05Vpp-14Vpp Cable Length: Approx. 70cm / 2756inchSize: 135x80x32mmcolour: as shownMaterial: ABSPackage Contents:1 x Signal generatorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.