Yealink CMKit-121 is a complete ceiling audio solution for medium to large rooms (5×8m, expandable to 6×10m with two cables), including a CM20 microphone, two CS10 speakers, and an RCH40 E2 PoE switch.

CMKit-121 is designed for professional conferences, CM20 provides high-quality full-duplex (RT60=408ms@1kHz, noise 40dBA, height 2.8m), with intelligent noise cancellation and automatic acoustic environment adjustment, CS10 coaxial speakers focus on mid-frequencies for audio clarity. RCH40 E2 supports PoE for simplified installation, each independent chassis for audio stability.
Supports seamless integration with Yealink MVC/Teams/Zoom Rooms, easy ceiling installation, 15 kg weight, compatible with medium RT60 environments (white).
Yealink CMKit-121 provides one comprehensive answer to the question every IT manager asks when planning to equip meeting rooms with a ceiling sound system: “What exactly do I need to buy, and will all the components work together seamlessly?” Instead of searching for each separate component and ensuring compatibility between microphone, speaker, processor, and cables, CMKit-121 comes as a pre-tested, Yealink-certified integrated solution optimized for optimal performance immediately upon installation.
The package includes an AI-powered Beamforming smart ceiling microphone that captures the voices of all participants with crystal clear clarity from anywhere in the room with automatic speaker tracking and intelligent noise isolation, a mesh ceiling speaker that distributes the voices of remote participants with equal clarity throughout the room, and a processing unit that connects and manages the components with all the necessary installation and connection accessories.
The result is a fully integrated ceiling audio experience: No microphones on the table, no visible speakers, no visible cables – just a clean conference table and comfortable workspace with professional sound coming from the ceiling and picked up from the ceiling. Remote participants hear every word with absolute clarity, and those in the room hear remote participants with equal clarity from all directions.
What makes CMKit-121 particularly strategically valuable is that it radically simplifies the process of deploying at scale. Instead of designing a customized solution for each room – selecting the right microphone, compatible speaker, correct processor, and checking for compatibility – IT teams simply order as many CMKit-121 packages as there are rooms required, and get a standardized, certified, and ready-to-install solution. This speeds deployment, minimizes configuration errors, simplifies inventory and maintenance, and ensures a consistent audio experience across all rooms.
The package supports PoE operation for all its overhead components, simplifying installation with only network cables, and integrates with Yealink’s leading conferencing systems and unified communications platforms. All components are centrally managed via the Yealink Device Management platform to deploy, manage and monitor dozens of packages across multiple locations from a single control panel.
Why an IT manager should choose Yealink CMKit-121
Complete ceiling acoustic solution in one package – no need to select separate components or check for compatibility
Tested, certified, and optimized to work together with the best performance from the first moment
Simplifies large-scale deployment – same standardized package for all similar rooms
Transforms any room into a complete ceiling sound environment – no devices on the table
Includes AI Beamforming microphone, mesh ceiling speaker, processing unit, and mounting accessories
Supports PoE operation for simple installation with only network cables
Centrally managed via Yealink Device Management across multiple locations
Main advantages
Complete, ready-to-deploy solution in one package – includes all necessary components (ceiling microphone + ceiling speaker + processing unit + installation accessories), tested, certified and optimized to work together at optimal performance immediately after installation
Intelligent ceiling microphone with AI Beamforming technology – clearly captures the voices of all participants Absolute from any point in the room with automatic speaker tracking and intelligent noise isolation that learns and adapts to the room environment
Mesh ceiling speaker with even sound distribution – delivers the voices of remote participants with balanced clarity to everyone in the room regardless of their location
Fully clean conference table – all acoustic components are hidden. All audio components are hidden in the ceiling, no microphones, speakers or cables on the table for a professional look and comfortable workspace
Simplified and Standardized Broadband Deployment – Same approved package for all similar rooms, speeds up deployment, reduces configuration errors and simplifies inventory
PoE operation for all ceiling components – Simple installation with only network cables without separate power supplies or analog cables in the ceiling
Comprehensive centralized management via Yealink Device Management – Deploy, manage, monitor and update all components across multiple locations from a single control panel with remote settings