--- product_id: 47210548 title: "RC Digital Servo Tester 1 Channels Motor Servo Controller Centering Tool with Over-Current Protection & 2 Control Modes for RC Car Airplane Robots Tester Tool" brand: "lewansoul" price: "Rp409925" currency: IDR in_stock: true reviews_count: 13 category: "Lewan Soul" url: https://www.desertcart.id/products/47210548-rc-digital-servo-tester-1-channels-motor-servo-controller-centering store_origin: ID region: Indonesia --- # 5-8.4V real-time voltage display 0.09° ultra-precise servo control 2 control modes for versatile testing RC Digital Servo Tester 1 Channels Motor Servo Controller Centering Tool with Over-Current Protection & 2 Control Modes for RC Car Airplane Robots Tester Tool **Brand:** lewansoul **Price:** Rp409925 **Availability:** ✅ In Stock ## Summary > 🎛️ Master your servos like a pro—precision testing, zero guesswork! ## Quick Answers - **What is this?** RC Digital Servo Tester 1 Channels Motor Servo Controller Centering Tool with Over-Current Protection & 2 Control Modes for RC Car Airplane Robots Tester Tool by lewansoul - **How much does it cost?** Rp409925 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/47210548-rc-digital-servo-tester-1-channels-motor-servo-controller-centering) ## Best For - lewansoul enthusiasts ## Why This Product - Trusted lewansoul brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Control Modes:** Switch between two PWM modes to customize servo response for robots, RC cars, or airplane projects. - • **Compact & Lightweight:** At just 13.5g and 50x35mm, this tester fits seamlessly into any toolkit or workspace. - • **Plug & Play Precision:** Effortlessly center and test servos with high-accuracy potentiometer control—no coding needed. - • **Real-Time Voltage Insight:** Monitor your servo’s power with an integrated voltmeter ensuring optimal 5-8.4V operation. - • **Built-In Over-Current Protection:** Safeguard your servos and controller from electrical overloads for worry-free experimentation. ## Overview The RC Digital Servo Tester is a compact, lightweight tool designed for precise servo centering and testing. Operating within a 5-8.4V range, it features a real-time voltage display and ultra-accurate 0.09° control via a high-precision potentiometer. With dual PWM control modes and built-in over-current protection, it’s ideal for hobbyists and professionals working on RC cars, airplanes, robots, and AI grippers. ## Description Product description Digital Servo Tester / Controller Product Parameters 1. High-precision potentiometer, which can control the servo in real-time. 2. On-board voltage display module, which can monitor the voltage of power supply equipment in real-time. 3. High-resolution PWM signal, on-board 8-bit MCU, can make the control accuracy higher. 4. Support manual servo controller/servo reset back to center, switch by reset buttons under servo control knob. 5. Servo controller accuracy: 0.09° (refers to the PWM limit small change value of 1us). 6. Two power supply equipment link interfaces. (5-8.4V) 7. On-board 2-channel PWM digital servo interface, which can be controlled by a high-precision potentiometer. 8. Size: 2*1.4inch / 50*35mm, Weight: 0.03 lb / 13.5g How to use 1) Supply power to the controller, the voltage can be 5~8.4V, the specific voltage is subject to the actual use of the servo’s rated voltage; 2) The servo is plugged into the 3Pin servo port. 3) The power-on default potentiometer control mode, the servo rotates synchronously when the knob is turned; 4) The button below the knob can switch the mode, press respectively to “Manual Mode”: Knob control. “Neutral Mode”: Return to the center position. Information of Controller "+" Positive Pole "-" Negative Pole "S" Signal Terminal Manual Mode: Knob Control. Neutral Mode: Return to Center Position. Voltage Real-time Monitoring Through the voltage display module, the voltage of the power supply equipment can be monitored in real time to prevent the voltage from being too low to continue to control and test the steering gear. Manually Control The Servo Through the high-precision potentiometer, the angle synchronous rotation of the 2 steering gears can be controlled in real time. Servo Return To Center Through the reset button, the angle of the 2-way servo can be reset to 90°. Robotic Arm Debugging Claw Debugging Servo Gimbal Debugging Review: Handy little servo tester! - I like that it can be powered from the balance plug of a lipo battery or you can connect a power supply or connector to the handy screw terminals for power. The digital readout tells you the power supply voltage. The push-button lets you select either 'middle of travel' mode or control by the knob. There is no 'auto' mode, but it is great for testing a servo or setting up travel when installing one. You can control two servos at a time, they are slaved together. This is a simple device, it works well and was very inexpensive. You should probably cover the bottom of the board to prevent accidental shorts from metal on your workbench. I glued a piece of plastic on mine. For the money, this is a great little device. Review: Good Function - Nice the hands are able to move now! 😂 I'm so glad I got this as it is straight forward no need to complicate things right away. I'm no expert at these things yet sorry in advance for my tiny brain but it is mostly plug and play with your servos. Although you do need to use a separate power source and be sure the volts do not exceed 4.7v being the limit on most servos I believe. I kinda ran a 9v battery with it still with no problems but I tend to do these things often. Good for experimenting but I dont think it can constantly rotate so it's mostly 180° back and forth motions with the dials. This is great if you're doing something like me trying to figure out the next Bionic hand and such. May not be what u need for a RC Drone or Car tho, but again I'm no expert. Works with the hands sold by the same company very well. Edit: HOLD ON! Here is what I used on the picture actually before I forget. Sorry, I tend to work on these things on my spare time and that's not a lot... So, 9v will likely not be good directly.. unless u can regulate it or something. With this green light thingy I have it hooked up to 5V which is really good too I guess. The other pic also that blue with red display thingy as you guys probably know is a buck converter. This can help if u do use a 9v. As I said the volts need to be specific if not it will not be able to function at all. Great hand either way! ## Features - Specifications: Size: 2*1.4inch / 50*35mm, Weight: 0.03 lb / 13.5g - Voltage display: This controller operates on a voltage range of 5-8.4V and features a real-time voltage display. - Manual Adjustment: The controller has 2-channel PWM digital servo port, adopts high-accuracy potentiometer for precise servo control and provides servo reset function. - Support PWM Servo Support: It supports a wide variety of PWM servos, allowing manual angle adjustments without the need for coding. - Controller Accuracy: Its accuracy can reach up to 0.09° (with a 1us PWM limit for minimal changes) - Versatile Applications: It can be applied in grippers, AI robots, robot arms and more. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07485M6PH | | Best Sellers Rank | #58,070 in Toys & Games ( See Top 100 in Toys & Games ) #44 in RC Servos | | Brand | LewanSoul | | Brand Name | LewanSoul | | Color | Servo Tester 1ch | | Compatible Devices | PWM Servos | | Customer Reviews | 4.5 out of 5 stars 661 Reviews | | Item Weight | 0.03 Pounds | | Manufacturer | Hiwonder | | Maximum Operating Voltage | 8.4 Volts | | Measurement Type | Voltmeter | | Min. Operating Voltage | 5 Volts | | Minimum Operating Voltage | 5 Volts | | Model | SG_B07485M6PH_US | | Part Number | 1CH | | Power Source | Battery Powered | | Style | Modern | | Style Name | Modern | | UPC | 651519699409 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** LewanSoul - **Color:** Servo Tester 1ch - **Item Weight:** 0.03 Pounds - **Power Source:** Battery Powered - **Style:** Modern ## Images ![RC Digital Servo Tester 1 Channels Motor Servo Controller Centering Tool with Over-Current Protection & 2 Control Modes for RC Car Airplane Robots Tester Tool - Image 1](https://m.media-amazon.com/images/I/61kLdFCFwjL.jpg) ![RC Digital Servo Tester 1 Channels Motor Servo Controller Centering Tool with Over-Current Protection & 2 Control Modes for RC Car Airplane Robots Tester Tool - Image 2](https://m.media-amazon.com/images/I/71o4bJUlB-L.jpg) ![RC Digital Servo Tester 1 Channels Motor Servo Controller Centering Tool with Over-Current Protection & 2 Control Modes for RC Car Airplane Robots Tester Tool - Image 3](https://m.media-amazon.com/images/I/71KslmMjyIL.jpg) ![RC Digital Servo Tester 1 Channels Motor Servo Controller Centering Tool with Over-Current Protection & 2 Control Modes for RC Car Airplane Robots Tester Tool - Image 4](https://m.media-amazon.com/images/I/71rzVDzi24L.jpg) ![RC Digital Servo Tester 1 Channels Motor Servo Controller Centering Tool with Over-Current Protection & 2 Control Modes for RC Car Airplane Robots Tester Tool - Image 5](https://m.media-amazon.com/images/I/61NwTJmiteL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Handy little servo tester! *by J***. on May 6, 2020* I like that it can be powered from the balance plug of a lipo battery or you can connect a power supply or connector to the handy screw terminals for power. The digital readout tells you the power supply voltage. The push-button lets you select either 'middle of travel' mode or control by the knob. There is no 'auto' mode, but it is great for testing a servo or setting up travel when installing one. You can control two servos at a time, they are slaved together. This is a simple device, it works well and was very inexpensive. You should probably cover the bottom of the board to prevent accidental shorts from metal on your workbench. I glued a piece of plastic on mine. For the money, this is a great little device. ### ⭐⭐⭐⭐⭐ Good Function *by S***O on May 30, 2020* Nice the hands are able to move now! 😂 I'm so glad I got this as it is straight forward no need to complicate things right away. I'm no expert at these things yet sorry in advance for my tiny brain but it is mostly plug and play with your servos. Although you do need to use a separate power source and be sure the volts do not exceed 4.7v being the limit on most servos I believe. I kinda ran a 9v battery with it still with no problems but I tend to do these things often. Good for experimenting but I dont think it can constantly rotate so it's mostly 180° back and forth motions with the dials. This is great if you're doing something like me trying to figure out the next Bionic hand and such. May not be what u need for a RC Drone or Car tho, but again I'm no expert. Works with the hands sold by the same company very well. Edit: HOLD ON! Here is what I used on the picture actually before I forget. Sorry, I tend to work on these things on my spare time and that's not a lot... So, 9v will likely not be good directly.. unless u can regulate it or something. With this green light thingy I have it hooked up to 5V which is really good too I guess. The other pic also that blue with red display thingy as you guys probably know is a buck converter. This can help if u do use a 9v. As I said the volts need to be specific if not it will not be able to function at all. Great hand either way! ### ⭐⭐⭐⭐⭐ Great little tester *by L***T on February 2, 2025* Got this tester for use by my robotics students. It is a great little unit that is easy to use. The button provides access to two modes: Neutral (centers the servo) and Manual, which allows the user to turn the servo based on the position of the potentiometer dial. Small LEDs, located just left of the digital voltage display, show which mode is selected. There are two ways to power the board: one accepts the standard JST-XH charging balance connector, and the other accepts a direct wire connection. Would have been nice to have a female T-plug connector, but you can't have everything. Well worth the price. ## Frequently Bought Together - RC Digital Servo Tester 1 Channels Motor Servo Controller Centering Tool with Over-Current Protection & 2 Control Modes for RC Car Airplane Robots Tester Tool - Miuzei MG90S 9G Micro Servo Motor Metal Geared Motor Kit for RC Car Robot Helicopter, Mini Servos for Arduino Project (10) - HiLetgo 2pcs PCA9685 16 Channel 12-Bit PWM Servo Motor Driver IIC Module for Arduino Robot --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.id/products/47210548-rc-digital-servo-tester-1-channels-motor-servo-controller-centering](https://www.desertcart.id/products/47210548-rc-digital-servo-tester-1-channels-motor-servo-controller-centering) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-05-30*