Timer 555 Adjastable Frequency Generator Module

Timer 555 Adjastable Frequency Generator ModuleOn-board chip NE555.
A single channel output, the output duty cycle square wave is about fifty percent.
Onboard adjustable resistance, resistance can be controlled to adjust the output frequency.
Best choice for yourself or your friend.You will not be disappointed!Working voltage: 5-12V

Supply voltage: 4.5 to 12V
Supply current: 3mA at 5V Vcc
Min freq (approx): 15Hz 49% duty cycle at 5V Vcc
Max freq (approx): 24KHz 89.4% duty cycle at 5V Vcc
Output voltage: 4.5V at 5Vcc / 11.5V at 12Vcc