Sonoff RF Bridge 433

Overview

Sonoff RF Bridge 433 is an ultra low power consumption device that can convert 433.92MHz (433MHz) to WiFi. It's a bridge between 433MHz RF and WiFi, which can be added to iOS & Android App eWeLink. Users can firstly pair 433MHz devices with the RF Remote, then add their RF Remote to the App. Therefore, users can control the 433MHz devices through App eWeLink. It's specially designed for mobile device and IoT application.

From the picture, you can see the relations among the devices clearly. Firstly, you pair the 433MHz RF Remote controller with 433MHz device. Secondly, you add RF Bridge to App eWeLink. Thirdly, add the 433MHz RF Remote controller to RF Bridge via App, pair the buttons one by one. Then you can press the button on the App to turn on/off the 433MHz device remotely. One RF Bridge supports to add up to 4 RF Remote controllers.

You can add not only 1-4 buttons ordinary RF Remote to the RF Bridge on App, but also curtain RF Remote and Alarm. Please note that you can't see device status changes on the App.

Go shopping Sonoff RF Bridge 433 (SKU:IM170619001)

RF Bridge Diagram

WIFI 2.4G Characteristics

Support wireless 802.11 b/g/n/d/e/i/k/r standard
Support STA/AP/STA+AP working modes
Support WPA/WPA2, PSK and WP
Built-in TCP/IP protocol stack
Support multi-channel TCP client connection
Support Wi-Fi Direct (P2P)
Multi-queue management, make full use of 802.11e-compliant QoS priority
Adaptive rate fallback algorithm sets the optimum transmission rate and Tx power based on actual SNR and packet loss information.

433.92MHz Wireless Characteristics

Complete monolithic UHF receive/transmit
Receive & transmit frequency: 433.92MHz
Receive sensitivity: -107dBm
Up to 10dBm transmit power
Transmission rate: 10kbps
Autotune without manual adjustment
Ultra low RF antenna radiation
The receiving supports fixed code encoding, like PT2260, PT2262, PT2264, EV1527, etc.

Electrical Characteristics

The device is powered by micro USB cable, and it supplies power to the system through 3.3V LDO chip.

Rated Parameters

Power supply	Micro USB：+5V
Power supply	System：3.6V
I/O voltage	VSS - 0.3 ~ VDD + 0.3
Node Temp.	+150℃
Storage Temp.	-40℃ ~ +125℃
Operating Temp.	-40℃ ~ +125℃
Soldering Temp.	260℃

Technical Parameters

Name	Type	Description
	Chip	ESP8285,EFM8BB1
Wi-Fi	Wireless Standard	IEEE 802.11b/g/n/d/e/i/k/r
	Frequency	2.412GHz-2.484GHz
	Transmit Power	802.11b: +20±2dBm (@11Mbps)
		802.11g: +17±2dBm (@54Mbps)
		802.11g: +14±2dBm (@HT20,MCS7)
	Receiving Sensitivity	802.11b: -91 dBm (@11Mbps ,CCK)
		802.11g: -75 dBm (@54Mbps, OFDM)
		802.11n: -72 dBm (MCS7)
	Antenna	2.4G onboard antenna
433.92M	Working Frequency	433.92MHz
	Demodulation Bandwidth	5000Hz
	Transmit Power	Transmitting mode: 12.5mA
		Idle mode: 3mA
		Standby mode: 1uA
	Receive Current	Continuous receiving mode: 3.9 ~ 4.5mA
		Idle mode: 390uA
		Standby mode: 0.9uA
Hardware	Operating Voltage	3.0 ~ 3.6V
	GPIO drive of main chip	Max：12mA(ESP8285),12.5mA(EFM8BB1)
	Operating Current	Continue sending：70~200mA
		Normal working：30~200mA
		Stand-by mode：<200uA