The XT Series GateGuard Wireless Intercom and Access Control System from Ritron provides reliable, long-range (up to 1-mile, line-of-sight), two-way voice communication with visitors at gated entry points. The result is a more secure facility without compromising your ability to communicate. This wireless intercom system eliminates the trenching and maintenance associated with wired systems. The rugged, industrial-grade callbox is weatherproof and tamper resistant, and it includes a built-in relay to allow for remote gate control. The system includes a callbox with built-in relay, companion portable two-way radio and desktop base station radio. The system is available in either the VHF or UHF license-required frequency band or in a license-free, VHF MURS model. 800-872-1872; www.ritron.com