The Beech Lane Wireless RV Black Water Tank Monitoring System is a compact and lightweight device designed to provide real-time monitoring of your RV's water tank levels. Made of durable plastic and manufactured in the USA, this product is compatible with both Android and iOS devices. The sleek black color and wireless connectivity make it easy to install and use, ensuring you always have access to your water tank levels while on the road. With a weight of 8.1 ounces, this system is a convenient and reliable tool for any RV enthusiast.