The Yealink CMKit121 is an advanced ceiling audio solution developed to support medium to large conference rooms with high-performance voice capture and output. Designed as the core infrastructure for Yealink’s ceiling audio system, the CMKit121 includes the CM20 ceiling microphone, a pair of CS10 ceiling speakers, and the RCH40 E2 switch, collectively forming a reliable and scalable audio setup. This solution is particularly suited for professional meeting rooms measuring up to 5 by 8 metres, while deployment of two kits enables coverage for rooms up to 6 by 10 metres. The Yealink CMKit121 addresses common audio challenges in large collaboration spaces by integrating directional audio capture, intelligent noise management, and optimised voice reproduction. The CM20 microphone incorporates 16 omnidirectional elements and supports eight independent pickup zones, ensuring comprehensive voice coverage and clarity within a 4-metre radius. Combined with AI-based noise and reverberation control and an embedded digital signal processor, the system provides high-fidelity audio without the need for external processing hardware. The CS10 speakers complement the microphone array with a sound profile engineered to prioritise speech, enhancing dialogue clarity in conferencing scenarios. Fully compatible with Yealink MVC systems, the Yealink CMKit121 offers a dependable and efficient audio infrastructure for enterprises seeking consistent communication performance across larger meeting spaces.