Features:

Uses ICL8038 and high-speed op amp, higher accuracy.
Can output sine/triangle/square/forward and reverse sawtooth waveforms.
Frequency Range: 5Hz~400kHz; Duty Cycle Range: 2~95%(Adjustable)
Supports dual power amplifier without blocking the capacitor to ensure high and low frequency signal distortion.
Adjustable frequency and amplitude.
Frequency adjustment features coarse tuning and fine tuning.
All are through hole components, easy to install.

Specifications:
Material: FR4 + Acrylic
Supply Voltage: 12V~15V
Frequency Range: 5Hz~400KHz(Adjustable)
Duty Cycle Range: 2~95%(Adjustable)
Low Distortion Sine Wave: 1%
Low Temperature Drift: 50ppm / °C
Output Triangular Wave Linearity: 0.1%
DC Bias Range: -7.5V~7.5V
Output Amplitude Range: 0.1V~11VPP(operating voltage 12V)
Board Size: Approx. 7.8 * 5cm / 3.07 * 1.97in
Finished Product Size: Approx. 8.7 * 6 * 1.7cm / 3.43 * 2.36 * 0.67in
Product Weight: 81g / 2.86oz
Package Size: Approx. 11 * 7 * 3cm / 4.33 * 2.76 * 1.18in
Package Weight: 95g / 3.35oz

Note:
The testing picture is just for reference, please in kind prevail!

Package includes:
1 * Signal Generator DIY Kit
1 * User Manual(English)