Features: Continuously variable type with a rated thermal current of 10A Easy to wire and convenient to use; serves as a reliable replacement for damaged units Ideal for adjusting the speed of automotive fan heaters, defrosters, and fans Upgraded fan heater control switch designed with a heat sink for improved heat dissipation Universal compatibility with 12V or 24V systems; supports high power loads: 120W at 12V, 240W at 24V Specifications: Voltage: 12V or 24V (universal) Rated Thermal Current: 10A Rated Power: 120W @ 12V, 240W @ 24V Wiring: Red: Power supply +, Motor + Blue: Motor - Black: Power supply - Dimensions: 8.5 x 3.5 x 3.2 cm (3.35 x 1.38 x 1.26 inches) Note: Please allow 1–3 mm variation due to manual measurement. Due to differences in monitor displays, the actual color may vary slightly from the image. Package Includes: 1 x DC 12V/24V Controller Switch