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STV2.3 Servo Tester

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This is the STV2.3 servo tester that allows you to test up to 3 servos at a time without the use of a transmitter or receiver. The tester has 3 modes: manual, neutral and automatic. In manual mode, you control the servo/servos directly through the use of the knob. In neutral mode, this determines the neutral position of the servos which is very useful when assembling a new model. Finally, in automatic mode, the servo/servos swing back and forth automatically to both ends of the servos max throw. If you press 'mode' when powering up the servo tester, the throw is set to 150% rather than 100%. 

This servo tester offers you compact size, low power consumption, high reliability and easy operation. The servo tester is adaptable to different power sources; it can be used with a 4S dry battery, NiCd or NiMH pack. It can also be connected directly to a UBEC or ESC.


  • Input: DC 4.8 to 6.0V
  • Output signal: 1.5ms±0.5ms
  • Size: 16.5×32×0.98mm.
  • Weight: 3.8g (0.14 oz)
  • Adjustment modes: manual, neutral, automatic.

1 Review

  • 5
    Tested it

    Posted by Ibrahim on 18th Sep 2018

    I tested this servo tester. It works as it should. Very good value for money.