Sonoff RF Bridge 433
Contents
Overview
Sonoff RF Bridge 433 is an ultra low power consumption device that can convert 433.92MHz (433MHz) to WiFi. It’s specially designed for mobile device and IoT application. 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.
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 to VDD + 0.3 |
Node Temp. | +150℃ |
Storage Temp. | -40℃ to +125℃ |
Operating Temp. | -40℃ to +125℃ |
Soldering Temp. | 260℃ |
Technical Parameters
Name | Type | 433RFBridge |
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
File:Sonoff_RF_Bridge_433_Schematic.SCH.pdf Sonoff RF Bridge 433 Schematic
Useful Links
User Manual:
Wi-Fi Socket/Switch Fail to be Controlled Troubleshooting
Features wanted, bug report and discuss in Itead Smart Home Forum