The Apollo Conbraco Industries 15281 is an electric thermodynamic actuator designed for efficient control of heating and cooling systems. Operating on 24VAC or 10VDC, this actuator provides a reliable solution for proportional control in various applications. With a power rating of 3.1 VA and a normally closed (NC) configuration, it ensures optimal performance in HVAC systems. The actuator's compact design allows for easy installation, while its durable materials ensure long-lasting operation. This product is ideal for use in residential and commercial settings, providing precise temperature control and energy efficiency.