Simulates a receiver so you can test your motors and servos without having to use your radio. - Also has a 500 ma load test for receiver batteries and the BEC in your speed control.Mininim Pulse width 1 millisecond Maximim Pulse width 2 milliseonds Pulse Voltage 5 volts BEC Load Test 500 ma Length 2.5 inches Width 1.5 inches Height 1/2 inch Weight 1 ounce Connectors Futaba female