Tire Sentry Systems, Westlake Village, Calif., presents the wireless Tire Pressure System that monitors four or six tires. For models TMS-4RC and TMS-6RC, just plug into a cigarette lighter or power socket. Totally wireless and transportable, they are ideal for RVs, SUVs, light trucks and trailers. They come with theft-proof tire sensors and are available boxed or in display packaging. For more information, visit www.tiresentry.com.