Specification: Item name:flashing light control chip/airplane light control module/drone light circuit board Size:33.6 x 10.4mm Working voltage:3-12V Power supply voltage: 3-12v Description: Function:power on automatic cycle flashing, LED alternating flashing (flashing frequency 5.5HZ) Number of drive LEDS (3-60) Note: Alternating flashing refers to the fact that the lights do not flash simultaneously (but instead flash alternately at a relatively fast speed) The video is different from the real-life model because the frequency of camera is different from the frequency seen by the eyes Size is manual measurement, there are exist error Color: Green Material: PCB Package Contents: 5 x Modules Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.