Three-Mode RC Servo and ESC Tester

Check a compatible RC servo on the bench without setting up a transmitter and receiver. This three-mode tester generates the control signal for manual positioning, neutral-point setup and automatic movement checks.

✅ Position the servo from a knob - Manual mode changes the command as you turn the potentiometer.

✅ Set up around the neutral point - Neutral mode returns the command to the centre position for installation checks.

✅ Watch a repeated movement cycle - Automatic mode sweeps the servo so you can observe its response.

✅ Compare more than one servo - Connections support up to three suitable servos for side-by-side checks.

Give the Servo a Bench Check Before Installation

Fitting a servo arm is easier to plan when you know the neutral command and can see how the unit moves. A tester puts those checks at the bench before the servo becomes part of the model's linkage.

Supply the tester within its 4.8-6 V range and check polarity and signal compatibility. When testing an ESC, the ESC still drives the motor and requires its own correct power arrangement. Keep propellers and other driven hazards out of the test setup.

Technical details

• Modes: manual, neutral and automatic
• Input: DC 4.8-6 V
• Stated signal: 1.5 ms ±0.5 ms
• Size: approximately 48 × 42 × 15 mm
• Includes: one tester; power supply excluded

Add a simple bench-control stage before installing the next compatible RC servo.