Features: 1. Compact size, fully functional, easy to operate and portable. 2. Includes an oscilloscope for use in electronic circuit experiments and debugging, frequency characteristics testing of audio amplifiers, and pulse response measurement. 3. Offers excellent DSS accuracy and frequency stability, suitable for calibrating sweep time factors on oscilloscopes. 4. Square wave output is ideal for adjusting oscilloscope attenuator and probe pulse characteristics. 5. Can be powered by an adapter or a lithium battery. Specifications: Main output waveforms: Sine wave, square wave, triangular wave, sawtooth wave Maximum output amplitude: +/- 10Vpp (no-load) Output impedance: 50Ohm +/-10% DC bias: +/- 10V (no-load) Display: LCD1602 Material: Metal Resolution: 1 Hz Power supply: DC 3.5-10V Output frequency range: - Sine wave: 1Hz - 500kHz - Square wave: 1Hz - 20kHz (valid range) - Triangular wave: 1Hz - 20kHz (valid range) - Sawtooth wave: 1Hz - 20kHz (valid range) Package size: 20 x 15 x 5 cm Package weight: 210g Package list: 1 x Function Signal Generator 1 x USB cable