30A PWM Relay Module 12V 1/2 Channel RC Switch | DIY RC

30A Electronic PWM Relay Module – 12V, 1/2 Channel High-Power Switch for DIY RC Models

Take full control of your RC builds with this compact, high-power PWM Relay Switch Module. Designed for hobbyists, engineers, and RC enthusiasts, this 12V relay module lets you remotely switch high-current loads of up to 30A with precision — no calibration required. Whether you're wiring up model rockets, smoke systems, motors, or custom remote switching setups, this module delivers reliable, responsive performance every time. Made in Mainland China.

Key Features

• High-Power Switching: Controls loads up to 30A at 250VAC / 30VDC — capable of running motors up to 250W.
• PWM Signal Compatible: Accepts standard receiver signal wire input of 5–10V; works with all major brands of remote control equipment without any calibration.
• 1 or 2 Channel Options: One steering gear signal input controls 1-way or 2-way electronic switching (only one relay activates at a time in 2-channel mode).
• Three-Stage / Proportional Channel Control: Supports three-stage switching channel and proportional channel control for versatile operation.
• Universal Compatibility: Compatible with all major brands of RC remote control equipment — plug and play, no setup hassle.
• Compact & Lightweight Design: Perfect for space-constrained RC model applications.

Specifications

• Operating Voltage (Signal): 5–10V (receiver signal wire)
• Maximum Controlled Voltage: 30V DC / 250V AC
• Maximum Current: 30A
• Max Motor Load: 250W
• Output: 2-way (single relay active at a time)
• 1CH Relay Switch Size: 57.8mm (L) × 27.7mm (W) × 29.5mm (H)
• 2CH Relay Switch Size: 56.8mm (L) × 55.5mm (W) × 29.5mm (H)
• Control Type: Three-stage switching / proportional channel
• Country of Origin: Made in Mainland China

Application Range

• Remote control model rocket launch systems
• Remote control model smoke / fog control
• Weapon system control for functional RC models
• Control of various remote on/off switching systems
• DIY electronics and automation projects

Package Includes

• 1× PWM Relay Module (1CH or 2CH depending on variant selected)

Important Notes

• Due to lighting and screen variations, the item's color may appear slightly different from the photos.
• Please allow 1–3cm measurement tolerance due to manual measuring.

For general electrical safety guidelines and best practices when working with relay modules and electronic switching components, refer to the U.S. Consumer Product Safety Commission – Electrical Safety resource.

Learn more: IRC

Frequently Asked Questions

Q: What is a PWM relay module and how does it work with RC receivers?

A: A PWM (Pulse Width Modulation) relay module reads the standard servo/PWM signal output from an RC receiver and uses it to trigger a high-power relay switch. This allows your RC transmitter to remotely turn large electrical loads — like motors, lights, or smoke machines — on and off without needing to run high current through the receiver itself. This 30A PWM relay module supports 5–10V signal input and is compatible with all major RC brands out of the box.

Q: Can this relay module handle both 1-channel and 2-channel switching?

A: Yes! This module is available in both 1CH and 2CH variants. The 2-channel version uses a single PWM signal input to control two separate output channels, though only one relay activates at a time. This makes it ideal for toggling between two devices or directions using a standard three-stage RC transmitter channel.

Q: What types of loads can I connect to this 30A PWM relay switch?

A: This relay module supports loads up to 30A at 250VAC or 30VDC, making it suitable for motors up to 250W, lighting arrays, solenoids, smoke machines, and other high-draw accessories commonly used in RC models and DIY electronics projects. Always ensure your wiring and connectors are rated appropriately for the current you intend to carry.

Q: Do I need to calibrate this relay module with my RC system?

A: No calibration is required. This PWM relay module is designed to be universally compatible with all major brands of RC remote control equipment. Simply connect it to your receiver's signal output and it's ready to use — making it an excellent plug-and-play solution for both beginners and experienced RC hobbyists.