2-1 Device powers an OZRadial 400B as well as any smart device that chares with a USB cable. 

• Compatable with the OZ Radial 400B & Radial EZ

• An added 6 extra hours of battery life
     To destroy more odors longer 

• Includes a 21V DC power supply 
     For convenience 

• OZ products are not intended for in-the-field use.

WARNING: Ozone products are intended for use in unoccupied spaces