3 LEDs light version (Weight 13g.) give you more information about your lipo battery voltage status..(green light = safe - full power , yellow light = fine for mind 3D or waring, blue/red blink light + beep sound = please try to landing)

* If the green LED keep blight for long that mean you have very good battery or your set up is perfect for high battery saving.(motor give big power but low battery eating)

SUPER BLIGHT LIGHT, can see within 50ft. Solder the red wire to your BATT+ and the black wire to your BATT - wire on ESC battery input side or direct solder to ESC battery plug/connector.

* Work well on any 3 Cells of Li-po helicopter .. FOR XL HDE/CDE, S, SA, SE v.1, SE v.2

Green is perfect to fly, yellow for fine but red/blue must land

very bright light

* While you made set up your helicopter you may hear beep sound ... if you don't want .. simple find a small glue tape or double side tape place at the center hole of the beeper horn... and don't forget to remove before flight!