Features：

Oil immerged gear reducer.

Mechanical limit switch.

Electronic limit can be optional.

Brake inside (KG50/KG50S).

Full-auto release (KG50/KG50S).

Manual release (KG40/KG70S).

Auto-stop when obstruction.

Auto-close function can be set.

Remote control with rolling code 433.92Mhz.

Manual release chain when power supply failure.

Wiring terminals for alarm lamp, infrared photocell, etc.