The VX-410/420 series portable radios are no longer manufactured, however accessories and replacement parts may be available. Please contact your Vertex Standard representative for additional information. Dependable and Discreet Communications Intrinsically SafeThe VX-410/420 Series meet the SGS requirements of ANSI/UL913 6th Edition for use in Classes I, II, III, DIV I Groups A-G hazardous locations. Discreet Communications and SecurityIncludes Voice Encryption for private communications and programmable key lock control to prevent inadvertent channel change or unwanted function changes, which may be important when the radio is concealed and subject to accidental pressure on the keys. Also includes Stun/Kill/Revive capability to disable a lost or stolen radio — mitigating any breach of security from unwanted listeners. When Safety CountsIncludes built-in Emergency notification that will switch to a designated channel and send an emergency alert.For enhanced worker safety, the Lone Worker mode is a built-in timer that requires the user to reset at a predetermined interval. If not reset, the radio automatically switches to Emergency mode to alert help. Exclusive Auto-Range Transpond System (ARTS)Designed to inform the user when out of communication range with another ARTS-equipped station. If out of range more than 2 minutes, the radio senses no signal and beeps to alert the user. The base station can then alert the field unit to move back into range. A great solution to keep your workers coordinated. FCC Narrowbanding CompliantMeets the FCC Part 90 requirement for using 12.5 kHz channels by January 1, 2013.