The Aeroqual 2 way adapter cable is used with the Series 500 unit when multiple cords need to be plugged in to the base unit. This is typically the case when the Temperature & Relative Humidity sensor is used with the unit, and it also needs the same connection spot to plug the computer connector cord. This replacement cord can be purchased should you ever lose, misplace, or need an additional cord.
California Regulatory Warning
They are to be used in unoccupied spaces only.
Health hazard warning: emits ozone.