Multi-Function RC Servo Tester

Bench tester for RC servos and ESCs that generates the PWM signal itself, so you can check a part without a receiver, transmitter or flight controller in the loop. Use it to confirm a servo moves smoothly, centre it before fitting horns and linkages, or run a motor up through its ESC on fixed-wing, VTOL, car and boat builds.

Key features

• Three modes: manual positioning, neutral (holds the servo at centre) and automatic sweep
• Selectable pulse rates: 50 Hz for analog servos, 125 Hz and 250 Hz for digital servos
• Drives up to four servos at once for side-by-side comparison
• Neutral mode lets you set horns and control surfaces true before the first flight
• Sweep mode cycles a servo end to end, a quick way to spot stripped gears or jitter

Stick to the 50 Hz setting for analog servos, as the faster digital rates can overheat servos not rated for them. When testing an ESC, take the propeller off first: the tester drives the throttle signal directly, with none of the arming checks a flight controller applies.