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The ToolkitRC ST8 Advanced Multi-Servo Tester is a compact charger that boasts a wide array of features not found in chargers on the market. It includes multiple input sources, programmable 8-channel output signal, multiple measurement modes, 4 independent current acquisitions and much more!


  • The ST8 is a product for testing servos, with up to 28V voltage output, 8-channel signal output, current measurement, curve display, and other functions.
  • 4 channels of programmable independent signal, 8 channels of signal output, the accuracy of 1 ms.
  • 4 independent current acquisition, respectively, curved display.
  • Multiple measurement modes (speed, count, step, linear).
  • output PWM signals with a period of 33 to 1000 Hz.
  • A variety of signal trigger sources (internal, buttons, knobs, external sources).
  • Measure the response speed of the steering gear with an accuracy of 1 millisecond.
  • The external input signal supports PWM/ PPM/ SBUS with an accuracy of 1 ms.
  • Drive the servo with a maximum load of 100W.
  • With the multi-language system, you can upgrade the language you need.
  • The device is simulated as a USB flash drive, and the upgrade file is copied to implement a product firmware upgrade.


  • Input voltage: 7-28V @ MAX 10A
  • Main output port: 5.0V-28.0V@MAX 10A
  • Signal port: 5.0V-8.4V@MAX 4A / S1-S4
  • Output voltage: 5.0V-8.4V@MAX 4A / S4 Ext.
  • output signal:
  • 100us-2900us @ 33-1000Hz @ S1-S4
  • PWM 500us-2500us @ S5
  • PPM 8CH @ S5 SBUS 16CH @ S5
  • P1 rotation range: 1000us-2000us @ P1
  • MicroUSB: Upgrade @ USB3.0
  • LCD: 2.4 inch TFT RGB 320 * 240 resolution
  • Product size: 99mm * 68mm * 26mm
  • Weight: 140 grams
  • Packing size: 105mm * 80mm * 45mm
  • Weight: 160 grams

Download Manual


  • 1 x ToolkitRC ST8 Advanced Multi-Servo Tester
  • 1 x USB Wire
  • 1 x Manual

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