Stepless Speed Controller Switch AC 220V for Power Tools & Fans
Stepless Speed Controller Switch AC 220V for Power Tools & Fans
AC 220V–250V Stepless Variable Speed Controller Switch
Take full control of your power tools, fans, and heating appliances with this precision stepless variable speed controller. Featuring a digital voltage display and smooth rotary knob, this controller lets you fine-tune output voltage from 0 to 220V with 1-volt accuracy — giving you exact speed, temperature, and dimming control at your fingertips. Made in Mainland China.
Key Features
- Wide Compatibility: Works with exhaust fans, tungsten/halogen/incandescent lamps, electric furnaces, angle grinders, marble machines, blowers, heating rods, electric blankets, and brushed power tools. Not suitable for appliances with circuit boards (LED energy-saving lamps, induction cookers, rice cookers, water pumps, washing machines, etc.).
- High-Quality ABS Shell: Flame-retardant, high-temperature-resistant ABS plastic housing that won't discolor, deform, or crack. Internal components use thickened phosphor bronze for long-lasting, reliable performance.
- Precision Digital Display: Real-time voltage readout with LED-backlit digits for clear visibility. Adjust with the precision knob to achieve control accuracy down to 1 volt.
- Overload & Short-Circuit Protection: Built-in independent switch automatically cuts power if instantaneous current exceeds 15A, protecting both controller and connected appliance. Status indicator light shows current operating condition.
- Convenient Rear Hook Design: Integrated rear hook lets you hang the controller on a tool bag for effortless portability on the job site. Plug-and-play setup — no wiring required.
- Multiple Plug Options: Available in EU, AU, US, and UK plug standards to suit your region.
Specifications
| Input Voltage | AC 220V–250V (US standard: AC 100–120V) |
| Output Voltage | AC 0–220V adjustable (US: 0–100V) |
| Maximum Power | 4000W (recommended load: 2000W) |
| Maximum Current | 15A (recommended load current: 9A) |
| Product Dimensions | 120 × 65 × 55 mm |
| Shell Material | Flame-retardant ABS Plastic |
| Plug Types | EU / AU / US / UK (optional) |
| Country of Origin | Made in Mainland China |
Application Scope
- Speed Control: Fans, brushed motors, electric power tools (without speed gears)
- Temperature Control: Electric stoves, ovens, water heaters, heating rods, electric blankets (non-smart/non-display types)
- Dimming: Tungsten, incandescent, halogen, heat-preservation lamps, and light strips (not for LED lamps with circuit boards)
Important Precautions
- This controller reduces voltage only — it has no voltage-boost function. Not suitable for applications requiring very precise or very low-speed control.
- Do NOT use with appliances containing circuit boards or capacitive electronic components.
- Keep out of reach of children and away from fire sources.
- Not waterproof — for indoor, dry environments only. Avoid water splash near bathrooms, kitchens, and fish tanks.
Package Contents
- 1 × Stepless Speed Controller Switch
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Frequently Asked Questions
Q: What types of tools and appliances can I use this stepless speed controller with?
A: This variable speed controller is compatible with fans, brushed power tools (like angle grinders and hand drills without gear settings), tungsten/halogen/incandescent lamps, electric stoves, heating rods, and electric blankets. It is NOT compatible with appliances containing circuit boards, such as LED energy-saving lamps, induction cookers, rice cookers, water pumps, or washing machines.
Q: Can this AC speed controller be used in the USA?
A: Yes — a US standard plug option is available. The US version operates on AC 100–120V input and provides 0–100V adjustable output. All other plug versions (EU, AU, UK) operate on AC 220–250V input with 0–220V adjustable output.
Q: Does this speed controller provide protection against overload?
A: Yes. The controller features built-in overload and short-circuit protection. If the instantaneous current exceeds 15A, the switch automatically cuts power to protect both the controller and your connected appliance. A status indicator light lets you monitor the operating state at all times.
Q: Is this controller waterproof and suitable for outdoor use?
A: No. This speed controller is designed for indoor use in dry environments only. It is not waterproof, so avoid using it near water sources such as bathrooms, kitchens, or aquariums where water splashing could occur.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.