The iSeries AX-200TFRi is a 200ft. battery-powered photobeam detector that includes Inovonics EN1941 transmitters built in, making it a ready-to-install wireless solution for perimeter protection. Because no trenching or wiring is involved in the installation process, a substantial reduction in labor costs and install time can be expected. The AX-200TFRi also includes four lithium D cell batteries with a lifespan of three to five years. In addition, the AX-200TFRi is compatible with the AX-TW Series line of photobeam enclosures for a clean, concealed, wireless mounting option.