Highlights
- Complete ceiling-mounted audio solution for medium to large conference rooms.
- CM20 ceiling microphone: 16-element beamforming array, 8 independent pickup zones, internal DSP.
- Two CS10 ceiling speakers: 5.7" woofer, 1.1" tweeter, tuned for video conferencing vocal clarity.
- RCH40 E2 managed 4-port PoE+ switch, simplifying cabling and device power.
- Microsoft Teams certified.
- Covers standard rooms up to 5m x 8m; combine two kits for extra-large rooms up to 6m x 10m.
- Each kit operates as an independent audio unit for reliable, straightforward system management.
Ideal For
- Medium to large conference rooms (up to 5m x 8m) needing ceiling-mounted, camera-free audio
- Extra-large rooms (up to 6m x 10m) deploying two kits for expanded coverage
- Deployments wanting even audio distribution without tabletop microphone or speaker clutter
- Rooms adding ceiling audio to an existing camera or video bar setup
Resources
Yealink CMKit-121 Room Audio Kit, 1x CM20, 2x CS10, 1x RCH40 E2 (1103836)
The CMKit-121 is a complete ceiling-mounted audio kit for medium to large conference rooms, combining a CM20 ceiling microphone, two CS10 ceiling speakers, and an RCH40 E2 switch. The CM20's 16-element beamforming array captures voices across 8 independent pickup zones with an internal DSP and vocal-tuned EQ, while the two CS10 speakers deliver rich, clear audio tuned specifically for video conferencing.
The RCH40 E2, a compact managed 4-port PoE+ switch, powers and connects the CM20 and both CS10 speakers, simplifying cabling with QoS and Yealink SafeConnect for device prioritization. One kit provides complete, even coverage for a standard room up to 5m x 8m, and two kits can be combined for extra-large rooms up to 6m x 10m, with each kit operating independently for reliable performance. Before ordering, confirm this kit uses the standard CS10 speakers, not the Dante-based CS10-D, since the Dante version is not compatible with this configuration.
Key Specifications
- Manufacturer model: CMKit-121 (SKU 1103836)
- Product type: Ceiling-mounted room audio kit
- Kit contents: 1x CM20 ceiling microphone, 2x CS10 ceiling speakers, 1x RCH40 E2 switch
- CM20 microphone: 16-element omnidirectional beamforming array, 8 independent pickup zones, internal DSP, up to 4m radius coverage, full-duplex capture within 3m
- CS10 speakers: 5.7" woofer, 1.1" tweeter, 20W combined output, 100-20,000 Hz frequency response, PoE-powered
- RCH40 E2 switch: managed 4-port PoE+ (802.3at), 1x GbE uplink, 4x GbE downlink, QoS, Yealink SafeConnect, EasyConnect
- Room coverage: up to 5m x 8m per kit; up to 6m x 10m with two kits combined
- Platform certification: Microsoft Teams
- Connectivity: Ethernet, Bluetooth 5.2
What's Included
- 1x CM20 ceiling microphone
- 2x CS10 ceiling speakers
- 1x RCH40 E2 switch
Certifications and Compatibility
- Microsoft Teams: certified.
- Speaker compatibility: uses the standard (non-Dante) CS10; the CS10-D (Dante edition) is not compatible with this kit's host configuration.
- Room sizing: one kit for rooms up to 5m x 8m; two kits combined for extra-large rooms up to 6m x 10m, each kit operating as an independent audio unit.
- Compatibility is limited to Yealink-published CMKit-121 components. Confirm current compatibility against Yealink's documentation for your specific deployment.
Design Considerations
- Confirm the room size fits a single kit (up to 5m x 8m) or requires two kits combined (up to 6m x 10m).
- Confirm the room needs the standard CS10, not the Dante-based CS10-D, since this kit is not built around Dante networking.
- Plan CM20 ceiling placement for even, 8-zone pickup coverage across the room.
- Plan RCH40 E2 switch placement for centralized PoE power and cabling to the microphone and both speakers.
- For multi-room standardization, specify a consistent CMKit-121 configuration across every ceiling-audio room.
VideoConferenceGear.com Assistance
We can confirm the CMKit-121 is correctly sized for your room, or whether two kits are needed for an extra-large space. We can help plan CM20 and CS10 ceiling placement, and confirm the RCH40 E2 switch's power and cabling requirements. For multi-room and multi-site programs we can help standardize the ceiling audio architecture across every conference room.
Common Questions
What's included in this kit?
One CM20 ceiling microphone, two CS10 ceiling speakers, and one RCH40 E2 PoE switch.
What room size does this kit cover?
A standard medium-to-large room up to 5m x 8m. For extra-large rooms up to 6m x 10m, two kits can be combined.
Does this use the Dante-based CS10-D?
No. This kit uses the standard CS10 speakers. The CS10-D (Dante edition) is not compatible with this configuration.
Is a separate power source needed for each device?
No. The RCH40 E2 switch provides PoE power to the CM20 and both CS10 speakers over Ethernet.
Is it Microsoft Teams certified?
Yes.
Warranty Information
Standard Manufacturer WarrantyProduct Videos
Custom Field
Product Reviews
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