RFXCOM RFX-433EMC Universal 433MHz RF Transceiver (Wi-Fi / USB / MQTT)

Breathe new life into your existing wireless gear with the RFXCOM RFX-433EMC—the modern standalone 433 MHz smart home gateway. Engineered in the Netherlands by RFXCOM, the RFX-433EMC bridges hundreds of 433.92 MHz and 433.42 MHz devices into modern smart home platforms like Home Assistant, Domoticz, and OpenHAB.

Featuring onboard Wi-Fi, native MQTT Auto-Discovery, USB-C, and dual RF transmitters, it lets you monitor weather sensors, trigger remotes, and operate motorized shades locally without relying on third-party cloud servers.

Key Features & Benefits:

• Built-in Wi-Fi & MQTT Auto-Discovery: Place the transceiver centrally in your home for optimal antenna coverage without needing a physical USB connection to your server. Devices are automatically published to your broker and detected via Home Assistant MQTT discovery.

• Dual-Transmitter Support (433.92 MHz & 433.42 MHz): Features a sensitive 433.92 MHz superheterodyne receiver alongside two distinct transmitters to control both standard 433.92 MHz gear and 433.42 MHz motorized systems (such as Somfy RTS).

• Extensive Motor & Blind Support: Seamlessly control motorized blinds, shutters, screens, and awnings from brands including Somfy RTS, Simu, Brel, Dooya, Motionblinds, Cherubini, Ozroll, and Forest.

• 100% Local Control & Low Power: Operates entirely within your local network with zero cloud dependencies, external subscription fees, or internet lock-in.

• CSMA-CA Anti-Collision: Carrier Sense Multiple Access with Collision Avoidance technology listens before transmitting to ensure reliable signal delivery across congested RF environments.

Broad Protocol Compatibility:

• Motorized Blinds & Awnings: Somfy RTS, Simu, Brel, Dooya, Motionblinds, Cherubini, Ozroll, ASA, Forest, and projection screens.

• Weather Stations & Sensors: Oregon Scientific (v1/v2/v3), TFA, LaCrosse, Alecto, Fine Offset, Cresta, Hideki, Viking, and Rubicson pool/soil sensors.

• Lighting & Power Sockets: KlikAanKlikUit (COCO), Chacon, NEXA, Intertechno, Livolo, LightwaveRF, Energenie, DI.O, and X10.

• Security & Remotes: Chuango, Visonic, Atlantic, Flamingo smoke detectors, and wireless chimes (Byron SX, SelectPlus).

Package Contents:

• 1 × RFXCOM RFX-433EMC Transceiver

Power Supply Note:

The RFX-433EMC requires an external 5V / 2A USB power adapter (standard USB phone charger or dedicated 5V/2A power supply) connected via USB-C cable for stable Wi-Fi and RF performance. A power brick is not included in the box.