The ToolkitRC ST8 advanced servo tester allows upto 8 servos to be tested simultaneously over 4 independent output channels. 

Features:

- 4 channels of programmable independent signal, 8 channels of signal output, accuracy of 1 ms
- 4 independent current acquisition, respectively,curve display
- Multiple measurement modes (speed, count, step,linear)
- Output PWM signals with a period of 33to1000Hz
- 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
- The external input signal supports PWM/PPM/SBUS with an accuracy of 1 ms
- Drive the servo with a maximum loadof 100W
- Multi-language system
- The device is simulated as a USB flashdrive allowing firmware upgrade

Specifications:

- 7.0-28.0V @MAX 10A
- 5.0V-28.0V@MAX 10A
- 5.0V-8.4V@MAX 4A/S1-S4
- 5.0V-8.4V@MAX 4A/S4 Ext.
- 100us-2900us@33-1000Hz @S1-S4
- PWM 500us-2500us@S5
- PPM 8CH@S5 SBUS 16CH@S5
- 1000us-2000us@P1
- Upgrade@USB3.0
- 2.4 inch TFT RGB 320*240 resolution
- 99mm*68mm*26mm
- 120g