Metal RC Servo & ESC Tester, Manual, Neutral and Auto Modes
Centre a compatible servo before fitting its horn or check its movement at the workbench. This metal-cased RC servo and ESC tester offers manual, neutral and automatic modes without a radio receiver. It is for RC builders setting up models and comparing servo response.
- ✅ Fit the servo horn from a known centre — Neutral mode returns a compatible servo to its centre signal.
- ✅ Check movement while adjusting the linkage — The manual knob lets you vary the output signal directly.
- ✅ Watch a repeated sweep without turning the knob — Automatic mode cycles compatible servos through the test movement.
- ✅ Compare servos before choosing a matched group — Three outputs let connected servos receive the same test signal.
Three bench-test modes in a small metal case
Connect an appropriate 4.8–6V DC supply with the correct polarity, then use Select to choose the test mode. Manual mode follows the rotary control, neutral mode provides the centre signal, and automatic mode cycles the output. The three indicator lights identify the selected mode.
The tester can send a common signal to up to three compatible servos for a response comparison. It can also provide a test signal to compatible ESCs following their own connection and arming procedures. It is not a motor power supply, battery charger or full radio-control system; provide the correct separate power arrangement for the connected equipment.
Choose Servo Tester W for the silver case, Servo Tester R for red, or Servo Tester B for black. Each variant contains one tester only. The servo in the example images is not supplied, and neither a power source nor a battery is included.
Manual, neutral and automatic modes provide three ways to check compatible servos; servo not included.
The black case has a three-output connector bank.
The input is labelled for a 4.8–6V supply; confirm polarity before connection.
The indicator lights identify the selected operating mode.
Turn the knob for manual adjustment.
The tester is small enough to keep with RC bench tools.
The Select button changes the test mode.
The metal housing contains the signal controls.
Three outputs send a common test signal.
The connected servo is an example and is not included.
One tester is supplied in the selected colour.
The red package is the Servo Tester R colour choice.
The red case has the same output arrangement.
The red unit is a compact bench accessory.
Use the marked input and output sides for the correct connections.
The mode lights sit above the adjustment knob.
Choose one colour; this is not a three-tester set.
The servo beside the red unit remains a separate purchase.
The silver package corresponds to Servo Tester W.
The silver case contains the same controls.
Use neutral mode when setting a suitable servo horn.
The silver unit has manual, neutral and automatic modes.
The small case can be kept alongside other RC setup tools.
The input connector is separate from the output bank.
The silver unit is shown connected to an example servo, not a supplied component.
One selected tester is supplied; an external power source is required.
Technical details
- Product: RC servo/ESC signal tester
- Input: DC 4.8–6V; observe polarity
- Modes: manual, neutral and automatic sweep
- Output pulse stated: 1.5ms ± 0.5ms
- Servo outputs: up to 3 compatible devices
- Case: metal
- Body size: approximately 48 × 42 × 15mm
- Net weight: approximately 29g
- Colours: W silver, R red, B black
- Package: 1 tester; servo, ESC, battery and power source not included
Choose a case colour and make centring and movement checks part of your RC setup routine.
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