This version does not have 433 RF function and without shell.
Sonoff SV(safe voltage) is a low power supply Sonoff version,which supports 5-24V power supply. The power separation circuit enables it to control AC or DC power for the connected device, but you need to do some welding to realize this function, please refer to Soldering Instructions below. Sonoff SV has GIPO reserved to support secondary development. This version does not have 433 RF function.

Features:

• Adnroid APP: E-WeLink-2.1.13.apk
• DC 5V-24V DIY WIFI Wireless Switch Sonoff SV Module For Smart Home
• Support 5~24V power supply.
  
• Support fast configure SSID and password through APP.
  
• Support automatic connect to server, register and update status info.
  
• Support tracking device status and timely remote control through APP.
  
• Support setting max 8 single or repeat timing tasks each device Reserve GIPO to support secondary development
  
• Support IOS cellphone also, you can search "e-welink" in Application store to setup it
• Support IOS cellphone also, you can search "e-welink" in Applicationstore to setup it for English version
• Reserve GIPO to support secondary development.
  
• Support numerous WIFI smart switches one smart phone.

WIFI Characteristics:

• 802.11 b / g / n
  
• Built-in Tensilica L106 ultra-low power consumption 32-bit micro-MCU, dominant frequency support 80 MHz and 160 MHz, support RTOS
  
• Built-in TCP / IP protocol stack
  
• Built-in TR switch, balun, LNA, power amplifier and matching network
  
• Built-in PLL, voltage regulator and power supply management components, 802.11b mode +20 dBm output power
  
• A-MPDU&A-MSDU aggregation and 0.4μs guard interval
  
• WIFI @ 2.4 GHz, supports WPA / WPA2 safe mode
  
• Support cloud OTA upgration
  
• UART, I2C, PWM, GPIO
  
• Deep sleep maintain current is 10 uA, shutdown current is less than 5 uA
  
• Wake-up, connect and transfer data packets in 2 ms
  
• Standby power consumption is less than 1.0 mW (DTIM3)
  
• Operating temperature range: -40 ℃ - 125 ℃
  
• Other parameters as follows