The three send-and-receive technology options for RCA surveillance kits are the One Wire, Two Wire, and Three Wire Surveillance Kits. These options refer to the configuration of the push-to-talk (PTT) mic, earpiece, and cabling. The One Wire Surveillance Kit uses a single combined microphone and PTT button that clips to your collar with an earpiece extending from it. The Two Wire Surveillance Kit includes a combined mic and PTT button clipped to your lapel or wrist cuff. The Three Wire Surveillance Kit uses one wire for the earpiece, a second for a microphone, and a third for a PTT button that attaches to your cuff. All RCA surveillance kits use heavy-duty cables and coiled tubes for enhanced durability, comfortability, and reliability, and are IP56 rated to withstand water from heavy seas or jet propelled water. Additionally, while police officers, FBI agents, and government spies regularly use surveillance kits, RCA professional two-way radio surveillance kits are also excellent for anybody whose job requires quiet conversation like librarians, museum staff, and audio engineers. For more than two decades, Discount Two-Way Radio has provided these professional grade RCA two-way radio surveillance kits to industries such as Hotels and Resorts, Community Churches, Casinos, Television Studios and Sound Stages, High Schools, Convention Centers, Hospitals, Professional Horticultural Nurseries, and Restaurants. Discount Two-Way Radio is North America’s master distributor for RCA two-way radio products, including important two-way radio accessories like surveillance kits and speaker mics. Contact Discount Two-Way Radio today at 800-895-5122 to see how a two-way radio surveillance kit could be a great addition to your two-way radio equipment.