OEM American Standard Trane ServiceFirst Temperature & Humidity Sensor! Specifications: Trane Service First Part # ZSENS930AW00M ZSENS930AW00MAAirstar Supply is your source for American Standard Trane OEM Replacement Parts. All OEM parts are updated using the most current up-to-date part numbers or model numbers. All American Standard Trane OEM parts are intended for use with the American Standard Trane models only. Can't Find It Contact Us with your unit's Model and Serial Number and we can help you find the part you need. (Professional Installation is Recommended)