DC 5V-24V Wireless Switch Sonoff SV

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DC 5V-24V Wireless Switch Sonoff SV(sku:437961)

DC 5V-24V Wireless Switch Sonoff SV(sku:437961)


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.


  • 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 single and repeat timing tasks.
  • Reserve GIPO to support secondary development.

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 upgrade
  • Support STA / AP / STA + AP mode
  • 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

Category Parameters Description
Wireless Parameter Wireless standard 802.11 b/g/n
Frequency range 2.4GHz-2.5GHz (2400M-2483.5M)
Hardware Parameter Data port UART/I2C
Operating voltage 3.0~3.6V(recommend 3.3V)
Operating current Average: 80mA
Operating temperature -40°~125°
Storage temperature Room temperature
Package size 65mm*34mm*16mm
Software Parameter Wireless network mode station/softAP/SoftAP+station
Security mechanism WPA/WPA2
Encryption type WEP/TKIP/AES
Firmware upgration Local serial programming/Cloud Upgrade/Host download programming
Software development Support secondary development
Network protocols IPv4, TCP/UDP/HTTP/FTP
User configuration cloud server, Android/iOS APP


PCB Size 65X34X1.2mm
Interface Indicator LED
UART WiFi,on/off

Electrical Characteristics

Characteristics Symbol Min Typ Max Unit
Power supply voltage VDD 5 - 24 V
Operation current for VDD IDD - - 290 mA


Sonoff SV hardware.png

Sonoff SV mode.jpg

Pin Map

Pin Index Pin Name Description
1 3V3 Chip power
2 TX Serial transmit port
3 RX Serial receiving port
7 GPIO14 I/O


File:Sonoff SV-Dimension.pdf

File:Sonoff SV Schematic.pdf


APP Download

  • Adnroid APP: E-WeLink-2.1.13.apk
  • Support apple cellphone also, you can search "易微联" in App store to setup it;
  • Support apple cellphone also, you can search "e-welink" in App store to setup it for English version;
  • More detail please refer to [1]


Packing List

1 x Wireless Switch Module