The New "Go-Slo III" has been improved with added features. With the precise performance of an 8 bit microprocessor the output is now "user selectable". There are two models available. You can operate 1, 2, or 3 servos on both units. The Model Mcd881 has all three servo outputs common. Both models allow the servo speed to be adjusted, 2 to 10+ seconds of travel in either direction with no loss of torque. 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.