Digital Servo Tester – Multi-Function LCD Display (50Hz/125Hz/250Hz)
Customization Service
We are the OEM ODM manufacturer. For bulk orders and custom solutions, please contact us at official@hobbywater.com
When will I get my order?
We prioritize fast order processing. For in-stock items, orders placed before 4:00 PM (Beijing Time) will be shipped the same day. Standard orders typically ship within one week, while customized orders require approximately 15-30 business days for production and delivery. Delivery times may vary under special circumstances.
Shipping Methods
We ship to most countries worldwide. However, please ensure compliance with your local import regulations.
- For the USA: We offer tax-inclusive shipping options. Expedited orders are shipped via DHL, UPS, or FedEx. Note: DHL does not allow undervaluation.
- For other countries: Tax-inclusive shipping is available upon request. Otherwise, orders will be shipped via 4PX by default.
For specific shipping requirements, please contact us in advance.
Product Details
Key Features:
✅ 3 Frequency Modes – Supports 50Hz (analog), 125Hz/250Hz (digital servos).
✅ Pulse Width Control – Adjustable 800-2200µs for precise servo calibration.
✅ Multi-Device Testing – Sync signals for servos, ESCs, and motors.
✅ Compact & Lightweight – Only 75x38x15mm, 26.2g (portable for fieldwork).
✅ LCD Screen – Real-time pulse width/frequency monitoring.
Specifications:
Voltage: 4.8V–6.0V (No reverse protection! Wrong polarity = damage).
Signal Range: 800–2200µs (1µs precision).
Compatibility: Analog/digital servos, ESCs, brushless motors.
Use Cases:
✔ Test servo jitter/speed differences (e.g., robotics, RC cars).
✔ Simulate transmitter throttle inputs for ESCs.
✔ Calibrate micro-adjustments (e.g., drone gimbals).
How to Use:
Power On → Auto-enters manual mode (rotate knob to adjust pulse).
Press Select to cycle modes (Neutral/Auto/Manual).
Press Pulse Width to toggle 50Hz/125Hz/250Hz.
⚠ Warnings:
Never reverse polarity! (No refunds for burnt units).
Match frequency to servo type (50Hz for analog, 125Hz/250Hz for digital).
Multi-Channel Servo/ESC Signal Adapter (5-Port)
Connection Guide:
Pin Layout (Vertical 5-Pin Header):
Signal (S): Yellow/White wire (TOP position, facing upward)
Positive (+): Red wire (Middle)
Negative (-): Black/Brown wire (Bottom)
Key Notes:
- Signal Orientation: Always insert with signal wires (S) facing upward to avoid reverse polarity.
- Parallel Control: Powers up to 5 servos/ESCs simultaneously (shared power bus).
- Voltage Warning: Ensure input voltage matches servo/ESC specs (typically 5V–6V).
⚠ Critical Safety Reminders:
- DO NOT reverse polarity (red/black wires). Damage may occur!
- Signal sequence matters: Misalignment can cause erratic behavior.
Application:
- Ideal for multi-servo robotics, RC model testing, or ESC calibration.

Why Buy This?
- Save Time – Diagnose faulty servos/ESCs instantly.
- Budget-Friendly – Cheaper than oscilloscopes for basic testing.
- Versatile – Works with RC planes, cars, robotics, and more!
Simple ESC Matching Guide
Voltage (V):
ESC voltage = Battery voltage (e.g., 3S LiPo = 12V, 6S LiPo = 24V).
Current (A):
ESC current ≥ Motor max current + 20-30% safety margin.
Quick Examples:12V, 20A motor → 30A ESC (or higher).
Rule: ESC can handle higher amps than needed, but never lower. Always check motor specs!