Your browser is not supported. For the best experience, you should upgrade to a modern browser with improved speed and security.

Outside Air Sensor

Item: OAS


Checking price...

Frequently Bought Together

Best Sellers

About This Product

Product Info


The OAS Outside Air Sensor allows precise real time monitoring of the Outside Air temperature on your Zoned HVAC system. The OAS is a versatile device because it can be mounted on an outside wall or an outside air duct. Make sure the OAS is mounted completely outside of the house, on the North, East, or West side of the building. Avoid direct sunlight. Do not mount the OAS low to the ground where snow can cover it. Do not mount the OAS close to exhaust vents of any type. Use a dedicated 2 conductor 18AWG solid copper jacketed thermostat cable to connect the OAS to the Zone Control System, Economizer or the Smart Humidistat. Avoid running cable in close proximity to line voltage circuits, or inside a conduit with other circuits. Avoid wire runs in excess of 100 ft.


Weight1 Pounds (lbs)
Length4 Inches (In)
Width4 Inches (In)
Height6 Inches (In)
Country of OriginUSA
Ambient Temperature Range0°F to 140°F (-17.7°C to 60°C)
BrandEWC Controls
Maximum Temperature145°F (62.7°C)
Prop 65No
Voltage24 VAC
Warranty OfferedYes


Equipment Part List

Shop Honeywell products