The Track Fresh Micro incorporates the standard Track Fresh Carbon Monoxide Filter in a smaller size that is well suited for IHRA, WKA, IKF, Sprint Drivers and even Dirt Track Drivers. The filter lasts up to 3 hours and if used in a dirt environment you should purchase a nylon "sock" to filter out the large particles first.
Every TFM system can be wired into a 12VDC System or you can use a 9 Volt Battery which will allow up to 1 hours use.