The SenTech 58 kHz Acousto-Magnetic In-Floor antenna will protect openings up to 4 feet (1.22m) using standard AM tags and Labels. Additional antennas / power packs may be added to cover wider openings. Fully programable utilizing advanced circuitry and software. Requires a STC5850 Power Pack, detection height up to 5 feet with hard tags and 4 feet with DR labels. Detection may vary greatly depending upon floor construction and other environmental factors. Remote diagnostics and tuning capability via TCP/IP.