Check the listing for details. Cisco 8831 Wireless Microphone Kit DECT 300 FEET CP-8831-MIC-WRLS. Color: Black, Condition: New. Listed at 587.88 USD. Conditions: NEW - New and never used product. Impeccable and without signs of usury conditions. The Cisco CP-8831-MIC-WRLS Wireless DECT Microphone Kit It is an essential accessory designed to expand the audio coverage of your conference phone Cisco Unified IP Conference Phone 8831. The kit includes one pair of wireless microphones who use technology DECT (Digital Enhanced Cordless Telecommunications). This technology ensures excellent, interference-free audio quality, with an extended operating range, typically up to 300 feet (about 91 meters) in the open field. The microphones allow participants seated far away from the 8831 central unit to be heard clearly, improving the conferencing experience in large meeting rooms or with unusual table arrangements. Advantages: Greater freedom of pos.