Both models allow the servo speed to be adjusted, 2 to 10+ seconds of travel in either direction. Go-Slo III units are great for precise operation of Flaps, Gear etc. The receiver cable is now a heavy 22 gage for better power delivery to one, two or three servos.
Go-Slo III's are compatible with 4.8 or 6 Volt systems and all proportional servos.
The unit is 1.5" x 1.5"x 3/4" and only .9 oz in weight.