LevNet RF, Signal Strength Meter, 315MHz, EnOcean, Title 24 compliant, ASHRAE 90.1 compliant. Leviton LevNet RF Wireless Self-Powered Solutions are easy to install and maintenance-free, saving ongoing labor and material costs while saving energy. EnOcean technology allows energy harvesting LevNet RF Transmitters to operate indefinitely without the use of batteries. The motion of a switch actuation, light on a solar cell, or temperature differentials in the environment provide power to LevNet RF Transmitters, allowing zero-maintenance wireless devices. The LevNet RF line includes multiple products that operate in the uncrowded 315MHz band offering greater transmission range (50-150 feet) than other wireless technologies and minimal competitive traffic. The Signal Strength Meter is a mobile tool for measuring and indicating the received field strength (RSSI) of EnOcean telegrams and disturbing radio activity at 315 MHz. It supports electrical installers during the planning and troubleshooting phase and enables them to verify whether the installation of LevNet RF Transmitters and Receivers is possible at the positions planned. This device is a must have for anyone regularly installing LevNet RF wireless controls. Since radio signals are electromagnetic waves, their intensity decreases as they travel away from the source. Obstructions attenuate radio signals. This tool allows installers to determine the best installation locations before equipment is installed. Distance, transmission angle, and obstructions all affect radio signal quality. For best performance, transmit signals directly through walls and do not use LevNet RF controls around metal. Wireless receivers and transmitters sold separately.