433MHz RF Relay Receiver Module – 1CH Wireless Remote Switch
433MHz RF Relay Receiver Module – 1CH Wireless Remote Switch
433MHz 1-Channel RF Relay Receiver Wireless Remote Control Module
Take full control of your DIY electronics projects with this compact 433MHz RF Relay Receiver Module (RX500A). Designed for makers, hobbyists, and engineers alike, this single-channel wireless remote control switch lets you trigger relays, LED lights, and low-voltage devices from a distance — no wiring hassle, no complex setup. With broad voltage compatibility (DC 3.6V–24V) and an ultra-sensitive receiver, it's the perfect building block for smart home automation, remote lighting, and custom control systems.
Made in Mainland China.
Key Features
- Wide Voltage Range: Operates on DC 3.6V to 24V, compatible with a wide variety of power sources and microcontroller setups
- 433/315 MHz Dual Frequency: Supports both 433MHz and 315MHz frequency bands for flexible pairing with compatible transmitters
- High Receive Sensitivity: -108 dBm at both 315MHz and 433.92MHz — picks up signals reliably even over longer distances
- Compact Micro Form Factor: Tiny 23.5 × 9 × 1mm footprint fits easily into enclosures, PCBs, or tight spaces
- Wide Operating Temperature: Functions from -40°C to +80°C, suitable for indoor and outdoor installations
- 1-Channel (1CH) Relay Output: Single relay channel for clean, simple switching of LEDs, lights, motors, or other low-voltage loads
- DIY-Friendly Design: Straightforward integration into Arduino, Raspberry Pi, or any custom RF remote control project
- Brand New & High Quality: 100% new module, ready to use right out of the package
Technical Specifications
| Operating Voltage | DC 3.6V – 24V |
| Frequency Band | 433MHz / 315MHz |
| Receive Sensitivity | -108 dBm @ 315MHz & 433.92MHz |
| Transmitting Power | 1W |
| Working Temperature | -40°C to +80°C |
| Dimensions | 23.5 × 9 × 1 mm |
| Channels | 1CH (Single Channel) |
| Package Includes | 1 × RF Relay Receiver Module |
Perfect For
- Wireless LED and lighting control systems
- DIY home automation and smart switching projects
- Remote-controlled garage doors, gates, or locks
- Arduino, Raspberry Pi, and other microcontroller builds
- Remote triggering of motors, solenoids, or relays
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Frequently Asked Questions
Q: What voltage does the 433MHz RF relay receiver module support?
A: This RF relay receiver module operates on a wide DC voltage range of 3.6V to 24V, making it compatible with standard microcontrollers (3.3V/5V), LiPo batteries, 12V systems, and more.
Q: Is this module compatible with Arduino or Raspberry Pi?
A: Yes! The RX500A module is widely used in DIY electronics projects with Arduino, Raspberry Pi, and other microcontroller platforms. It can be integrated to wirelessly trigger relays, control LED lights, or switch other low-voltage loads via a paired 433MHz or 315MHz RF transmitter.
Q: What is the receive sensitivity of this RF module?
A: The module offers a strong receive sensitivity of -108 dBm at both 315MHz and 433.92MHz, ensuring reliable wireless signal reception even at greater distances or through minor obstructions.
Q: How many channels does this RF relay receiver support?
A: This is a single-channel (1CH) relay receiver module, designed to control one output device at a time — ideal for simple wireless switching applications such as LED lighting, motors, or relay-driven circuits.
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.