Check the listing for details. CO2 Wall Sensor SEN01564 X13790422010 VACO2ZONE010 Service First/Trane. Condition: New. Listed at 32.00 USD. The CO2 Wall Sensor SEN01564 X13790422010 VACO2ZONE010 by Service First Trane is a high-quality HVAC sensor designed for use with Trane systems. This model is specifically compatible with Trane equipment, providing accurate readings for carbon dioxide levels in the air. With its reliable brand reputation and precise model number, this sensor ensures efficient monitoring and regulation of indoor air quality for improved comfort and health.