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 helps to connect 433.92MHz supported devices to WiFi network, so that users can control the devices through App eWeLink. It's specially designed for mobile device and IoT application. Go shopping Sonoff RF Bridge 433 (SKU:IM170619001)

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

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
	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

Hardware

Downloads

Sonoff RF Bridge 433 Schematic

Useful Links

User Manual：

Wi-Fi Socket/Switch Fail to be Controlled Troubleshooting

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