Feature:
Small size design, SMT process, input and output coupling capacitor using imported non-polar brand capacitors, op amp using fever-level AD828 chip.

Specification:
Working voltage: DC 5V-15V
Board size: 33x25mm/1.30x0.98"

Notice: 
The board has no voltage regulation function. It is best to use a regulated power supply or battery-powered, otherwise there may be interference.

Note:
1. There may be slight size deviations due to manual measurement, different measuring methods and tools.
2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.