RC PWM Relay Switch Receiver Controlled 4.8–8.4V 20A Electronic Switch
RC PWM Relay Switch Receiver Controlled 4.8–8.4V 20A Electronic Switch
RC Model PWM Relay Switch — Receiver Controlled Electronic Switch
Take precise control of your RC airplane, car, or model vehicle with this compact and reliable PWM Relay Switch. Designed to plug directly into your RC receiver, this electronic switch responds to standard PWM signals (900–2100µs) and can handle loads up to 20A — making it ideal for switching lights, motors, servos, and other onboard accessories with ease.
Made in Mainland China.
Key Features
- Wide Input Voltage: 4.8V–8.4VDC — compatible with 2S LiPo, NiMH, and most standard RC battery packs
- High Current Capacity: Handles up to 20A, suitable for a wide range of RC accessories and loads
- Standard PWM Signal: Works with 900–2100µs PWM signal output from any standard RC receiver channel
- Threshold Switching: Normally closed (NC) when signal <1650µs; switches to normally open (NO) when signal >1650µs
- On-Power Protection: If the PWM signal is >1650µs at power-on, the switch stays inactive until the signal drops below 1650µs — preventing unintended activation
- LED Status Indicators: Green LED = powered on; Blue LED = relay activated (NO position engaged)
- Large Capacitor Voltage Stabilization: Ensures stable, low-interference operation even in demanding RC environments
- Low Standby Current: ~10mA standby; ~130mA operating — won't drain your battery pack
- Compact & Lightweight: 40.7 × 16.3 × 16.2mm | 12 grams | 14cm wire leads — fits easily into any build
Specifications
| Input Voltage | 4.8V – 8.4VDC |
| Max Switching Current | 20A |
| PWM Signal Range | 900 – 2100µs |
| Switching Threshold | 1650µs |
| Standby Current | ~10mA |
| Working Current | ~130mA |
| Wire Leads | Black (–), Red (4.8–8.4V+), Yellow (PWM Signal) |
| Dimensions | 40.7 × 16.3 × 16.2mm |
| Weight | 12g |
| Wire Length | 14cm |
| Country of Origin | Mainland China |
Wiring Guide
- Black Wire: Negative pole (GND)
- Red Wire: Positive supply (must be between 4.8V and 8.4V)
- Yellow Wire: PWM signal input (from receiver channel output)
What's in the Box
- 1× RC PWM Relay Switch
Please Note: Colors may appear slightly different due to monitor settings. Allow 1–10mm tolerance due to manual measurement.
For more information on safe electrical wiring and standards for low-voltage electronics, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: What RC receivers is this PWM relay switch compatible with?
A: This RC PWM relay switch is compatible with virtually any standard RC receiver that outputs a PWM signal in the 900–2100µs range, including popular brands used in airplane, car, boat, and drone models. As long as your receiver channel outputs a standard servo-style PWM signal, this switch will work seamlessly.
Q: Can I use this relay switch with a 2S LiPo battery?
A: Yes! A fully charged 2S LiPo battery outputs up to approximately 8.4V, which falls within the 4.8V–8.4VDC operating range of this switch. It is also compatible with NiMH packs in the same voltage window, making it highly versatile for most RC models.
Q: What does the on-power protection function do?
A: The on-power protection feature prevents the relay from activating immediately at startup if the PWM signal is already above 1650µs when power is first applied. The switch will only begin normal operation once the signal drops below 1650µs, helping protect your connected devices from unexpected switching during power-on sequences.
Q: What is the maximum current this switch can handle?
A: This PWM relay switch can handle a maximum switching current of 20A. Always ensure your wiring and connector terminals are rated to handle your load current to maintain safe and reliable operation.