Real-Time Display Multiple Alarms：VESAFE TPMS with LCD screen displays accurate real-time pressure or temperature of 4 tires at the same time. The visual warning light and an audible alarm sound will be triggered immediately when abnormal conditions occur. The alert values are adjustable as per your needs (default 29-44PSI). Space-Saving with Cigarette Plug：Powered by its cigarette lighter plug, the TPMS is low power consumption and takes very little space in your car. Simply plug and mount the external tire pressure sensors so you can keep an eye on your tires’ conditions for safe driving. Waterproof Long Lifespan：This TPMS comes with 4 advanced external tire pressure sensors. Each pressure sensor is mini-sized (9gram), anti-theft, waterproof, and durable with a battery life up to 2 years. The batteries (CR1632) are replaceable once used up. Universal Easy to Install：This tire pressure monitor system is universal for most 4-tire cars, especially old cars without TPMS, or for DIY. Simply mount the sensor onto the valve of the tire as per labeled (RR, RF, LF, LR)，the sensors are already programmed, no need to program during the installation. Important Notice Tips：1) This TPMS is not suitable for motorhomes, campers, caravans, or trailers. 2) Add the option to turn off the display if the vehicle stops without power off. 3) An 18-Month Warranty is guaranteed by VESAFE. Please contact us for support, replacement or any other problems.