Feature:1. High Resolution: The Frequency module signal generator can generate sine, triangle and square wave forms.2. Adjustable Frequency: XR2206 function signal generator has a frequency of 1 hz‑1mhz, coarse and fine adjustment of frequency and amplitude.3. High Accuracy: This XR2206 function signal generator with case is accurate and practical. 2 for one sale, easy to use.4. Applicable: Signal generator DIY Kit has a wide range of power supply, using 9‑12V external power supply or 9V battery (not included).5. Easy to Install: This is a DIY kit, all are through hole components, easy to assemble your own function generator. Easy to install.Specification:Item Type: Signal Generator KitMaterial: PCBSize: Approx. 44.9 x 61.3mm/1.77 x 2.41inVoltage Supply: DC 9-12V InputWaveform: Square, Sine and Triangular Impedance: 600 Ohm + 10%Frequency Range: 1Hz-1MHzSine WaveAmplitude: 0 - 3V at 9V DC InputDistortion: Less than 1% (at 1kHz)Flatness: +0.05dB 1Hz - 100kHzSquare WaveAmplitude: 8V at 9V DC Input (no Load)Rise Time: Less than 50ns (at 1kHz)Fall Time: Less than 30ns (at 1kHz)Symmetry: Less than 5% (at 1kHz)Triangular Wave Amplitude: 0 - 3V at 9V DC InputLinearity: Less than 1% (up to 100kHz) 10mA.Package List:1 x Signal Generator6 x Cases9 x Screws5 x Nuts2 x DIY Accessories1 x Instruction ManualNote:Please allow some errors due to manual measurement.