Pros, Join Our TradeMaster Program!
Digital enthalpy (humidity/temperature) sensor for use with S-Bus devices and W7220 economizer controller.

  • This unit mounted C7400S enthalpy sensor includes solid state temperature and humidity sensors. Outputs a digital communicating signal on a two-wire Sylkbus communications link, reporting the temperature and humidity separately to the controller.
  • The controller determines the enthalpy (total heat), enabling economizer modes of operation when outside air enthalpy is suitable for free cooling.
  • Enthalpy sensors are compatible with Honeywell economizer systems.
  • When used with an economizer, the enthalpy boundary curve is programmed via the controller. When the temperature and humidity are determined to be suitable based on the relationship to the boundary, the controller allows outside air for economizing.
  • Ambient temperature operating range from -40° to 150° F.
  • Dual enthalpy sensors in outside air and return switches the controllers to economizer mode of operation anytime the outside enthalpy is less than the return air enthalpy.
  • UL recognized component (Guide info XAPX).
Read more
Product Type:
Operating Temp Range:
-40° to 150°F
Max Ambient Temp (°F):
Operating Humidity:
11 to 89% RH
Height (Inches):
Depth (Inches):
Used With:
W7210 Economizers
W7212A Economizers
W7213 Economizers
W7214 Economizers
W7215 Economizers
W7459 Economizers
W7460 Economizers
Speak with a real person who will go out of their way to help!
Open Now:
Monday – Thursday
8am–7:45pm ET
9am–7:45pm ET

1 Product Reviews

Product Q&A

Add-on Item

This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

Why don't we show the price of this item?

We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

To see the price, simply add the item to your cart or sign in.