RFXCOM RFX-433EMC Universal 433MHz RF Transceiver

Bring Your Existing 433 MHz Devices Into Your Smart Home

Connect compatible 433 MHz wireless devices to modern smart home systems with the RFXCOM RFX-433EMC Universal 433MHz RF Transceiver.

✔ 433.92 MHz Receive & Transmit
✔ 433.42 MHz Transmission for Supported Protocols
✔ Built-In Wi-Fi & MQTT
✔ MQTT Auto Discovery
✔ USB-C Connectivity
✔ Home Assistant, Domoticz & MQTT-Compatible Systems
✔ Made in the Netherlands

Built for compatible motorised blinds, shutters, awnings, weather stations, sensors, switches, remotes, and other 433 MHz RF devices.

Turn Existing RF Devices Into Smarter Automation

Many homes already have wireless devices that work reliably but operate separately from modern smart home systems.

Replacing those devices simply to achieve automation can be unnecessary and expensive. The RFXCOM RFX-433EMC provides a practical bridge between compatible existing RF equipment and modern automation platforms.

With Wi-Fi, USB, MQTT, and transmit-and-receive functionality, you can place the transceiver where RF coverage is most effective while connecting compatible devices to systems such as Home Assistant, Domoticz, and other MQTT-compatible controllers.

Whether you're automating motorised blinds, monitoring weather sensors, controlling switches, or integrating existing 433 MHz equipment, the RFX-433EMC gives your smart home setup a flexible RF gateway.

Why Choose the RFXCOM RFX-433EMC?

Choosing a 433 MHz RF transceiver is about more than simply receiving wireless signals. Compatibility, connectivity, integration, and reliable local operation all matter.

RFXCOM combines:

433.92 MHz receive and transmit capability for supported RF protocols

433.42 MHz transmission for supported systems including Somfy RTS and Funkbus

Wi-Fi, USB-C and MQTT connectivity

Native MQTT Auto Discovery for easier smart home integration

Support for numerous RF protocols and device families

Free firmware updates through upgradeable flash memory

Every feature is designed to make integrating compatible RF devices into a modern smart home simpler and more flexible.

Why RFXCOM Compared to Basic RF Receivers

The Difference You Notice Immediately

Connect Existing Wireless Devices

Bring compatible 433 MHz sensors, switches, remotes, weather stations, blinds, shutters, and other RF equipment into a modern automation environment instead of replacing everything.

Place It Where RF Coverage Works Best

With built-in Wi-Fi, the RFX-433EMC does not need to remain physically beside your smart home server. Position it where the wireless signal coverage is most useful.

Control and Monitor With One Device

The RFX-433EMC can receive compatible RF signals and transmit supported commands, allowing one gateway to handle both monitoring and control.

Simplify Home Assistant Integration

MQTT with Auto Discovery helps supported devices appear more easily within compatible smart home systems, reducing unnecessary integration work.

Keep Your Automation Local

The RFX-433EMC is designed for local-network smart home setups, helping you build automation around your own network rather than relying on a third-party cloud service.

Premium Features

How to Use the RFXCOM RFX-433EMC

Using the RFX-433EMC is straightforward:

Connect the transceiver to a suitable 5V USB-C power supply.

Connect it to your local network using Wi-Fi, or use USB where appropriate.

Configure MQTT if using the MQTT firmware and integration.

Connect it with your compatible smart home platform.

Enable MQTT Auto Discovery when adding supported devices.

Activate or operate your compatible RF device so it can be detected.

Configure your automations and control your connected devices.

Always check the RFXCOM compatibility information before purchasing to confirm that your specific device or protocol is supported.

Who Is It For?

The RFXCOM RFX-433EMC is ideal for:

Home Assistant users

Smart home enthusiasts

DIY home automation builders

Users with compatible 433 MHz wireless devices

Homeowners with motorised blinds and shutters

Weather station and environmental sensor users

Users upgrading older RF equipment into modern automation

Installers and developers working with MQTT-compatible systems

If you already have compatible RF equipment and want to connect it to a more capable smart home environment, the RFX-433EMC provides a practical upgrade path.

Broad Protocol Compatibility

The RFX-433EMC supports a wide selection of compatible RF protocols and device families, including:

Motorised Blinds & Awnings: Somfy RTS, Simu TUBE, Brel, Dooya, Motionblinds, Cherubini, Ozroll, A-OK and other supported systems.

Weather Stations & Sensors: Oregon Scientific, La Crosse, Cresta, FineOffset, Rubicson and other supported devices.

Lighting & Switches: KlikAanKlikUit, Chacon, X10, HomeEasy EU, Livolo and other compatible systems.

Other RF Equipment: Supported remotes, security devices, switches, motors and specialised RF protocols.

Compatibility depends on the specific device and protocol. Check the RFXCOM compatibility list for your equipment before ordering.

Package Contents

1 × RFXCOM RFX-433EMC Transceiver

Power Supply Requirement

The RFX-433EMC requires an external 5V USB power supply connected through USB-C. RFXCOM recommends a quality power supply of at least 2A for stable operation. A power adapter is not included with the transceiver.

Specifications

Frequently Asked Questions

What is the RFXCOM RFX-433EMC?

The RFX-433EMC is a 433 MHz RF transceiver and smart home gateway designed to connect compatible wireless RF devices with modern home automation systems through USB, Wi-Fi and MQTT.

Does it work with Home Assistant?

Yes. The RFX-433EMC is designed for integration with Home Assistant, including MQTT Auto Discovery for supported devices. It also supports Domoticz and other MQTT-compatible systems.

Can it transmit as well as receive?

Yes. The RFX-433EMC supports both receiving and transmitting on supported RF protocols, allowing compatible sensors to be monitored and compatible switches, motors and other devices to be controlled.

Does it support Somfy RTS?

Yes. The RFX-433EMC supports Somfy RTS through its supported 433.42 MHz RF functionality. Compatibility should be confirmed for the specific device or motor system.

Can I use Wi-Fi instead of USB?

Yes. Built-in Wi-Fi allows the RFX-433EMC to communicate over your local network, giving you greater flexibility when positioning the transceiver for RF coverage.

Is a power adapter included?

No. The transceiver requires an external 5V USB-C power supply. RFXCOM recommends a quality supply of at least 2A for stable operation.

Does it work with every 433 MHz device?

No. 433 MHz is a frequency, not a universal protocol. The RFX-433EMC supports many specific RF protocols, but not every 433 MHz device. Check your device against the RFXCOM compatibility information before ordering.

Bring Your 433 MHz Devices Into the Modern Smart Home

Stop treating compatible wireless devices as isolated pieces of equipment. The RFXCOM RFX-433EMC Universal 433MHz RF Transceiver gives you a powerful bridge between existing RF technology and modern home automation.

With Wi-Fi, USB-C, MQTT Auto Discovery, transmit-and-receive capability, broad protocol support, and Home Assistant compatibility, it provides the flexibility to monitor, control, and automate supported 433 MHz devices from one smart home gateway.

If your devices are supported, the RFX-433EMC gives you the connection you need to build a more integrated, flexible, and locally controlled smart home.