SX550J Bluetooth Board by YiHi

SX550J Bluetooth Board by YiHi

Product no.: SX550J

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YiHi SX550J Bluetooth Board

The SX550J board Is the next level of vaping with advancements in connectivity via bluetooth and upgraded USB charging via the newest standard USB-C port. Featuring a new joystick type control button to change settings and navigate the extensive menu options, the board can be configured to run either a dual cell setup or single cell. Power leads are pre-soldered to the board to save you the time and effort of soldering the correctly-sized wires to the board. 


  • Authentic  Ultra-thin YIHI SX550J processor
  • Joule mode: 10J-120J (212°- 572° F/ 100°- 300° C)
  • Resistance supported 0.05Ω - 3.0Ω
  • DC-DC Buck/Boost
  • Variable temperature with Ni200, Ti, Stainless, or custom TCR settings
  • Single cell or Dual cell capability
  • Balanced 5V/2A charge and connect to SXi-Q software with the onboard USB 3.1 Type C
  • Bluetooth connectivity and iOS or Android app controlled
  • Full colour TFT ips HD graphical user interface in 10 languages
  • Upgradeable firmware
  • Reverse polarity, output short, low resistance, low battery, voltage and overheat protection

See documentation download below for complete specification and wiring diagrams.



To charge
Plug the USB-C cable into the port, and connect to an approved USB wall adapter, or other USB power source. 

To update the software
Download the YiHi SXi driver and upgrade files from and install on your computer. Connect the device to your computer using the USB cable, enter the menu and find the link option, activate the link and perform the upgrade from your computer.

IMPORTANT: To benefit from the temperature limit settings a coil made from suitable temperature controllable resistance wire is required. Standard Nichrome or Kanthal A1 will not allow temperature control.



Additional product information

Documentation Download


Product Note Status Price
YiHi Joystick for 475J and 550J boards YiHi Joystick for 475J and 550J boards
£2.95 *
22mm sprung 510 atomiser connector 22mm sprung 510 atomiser connector
£4.95 *

+ P&P if applicable

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