Adjustable Puls Frequency Led Flashing Module For 5~12V Leds

It is of course possible to buy flashing LEDs, but then you always rely on the flashing frequency that the manufacturer
has determined and only rarely give the desired effect.
Much better of course is to take control yourself and use this handy and easy to connect LED flashing module.
The module is suitable for 5~12V LEDs and can be set completely infinitely from a low flashing frequency of about 2 sec.
to a super fast flashing stroboscope.
The great advantage of a frequency module is also that all connected LEDs blink simultaneously and do not get out of sync as is the case with LEDs with their own blinking frequency.

As mentioned, connecting it is child's play and this is done as follows:
Connect the + of a suitable 5~12V power supply to the VCC terminal pin of the module. 
Connect the - of the power supply to the GND terminal.
Connect the + of the connected LED(s) to Output
Connect the - of the connected LED(s) to GND (or directly to the - of the power supply)