Radios (bands): 3 radios: 2.4 GHz (2x2), 5 GHz (2x2), 6 GHz (2x2); 8 BSSIDs per radio
Uplink Port Speed: 1x 2.5 GbE RJ45 (1/2.5 GbE auto-negotiating)
Max Clients: 300+
PoE Requirement: PoE+ (802.3at), 42.5-57V DC input, 21W max consumption
Curation Review
✔ Pros:IP67/IPX6 weatherproof rating (with included cable-gland door kit) for outdoor deployment; Wide operating range of -30 to 60 C (-22 to 140 F) with 5-95% non-condensing humidity; Tri-band Wi-Fi 7 with a dedicated 6 GHz radio for less congested spectrum; 2.5 GbE uplink lets it outpace standard gigabit backhaul; Runs on PoE+ at 21W max, so it works with common 802.3at switches and injectors; 300+ client capacity and roughly 465 m2 (5,000 ft2) coverage area; Wall and pole mounts included; Managed through UniFi Network controller with a consistent ecosystem of Ubiquiti gear
✘ Cons:Only one uplink port (1x 2.5 GbE), with no 10 GbE option and no pass-through PoE; Each band is 2x2, so per-band throughput is modest compared with 4x4 or 6-stream outdoor peers; 2.4 GHz is capped at 688 Mbps; IP67 rating requires the cable-gland door kit to be fitted; Requires UniFi controller for full feature management, which adds setup overhead for small deployments; No independent lab throughput review found, so the 10.8 Gbps aggregate is a theoretical maximum; Price is high relative to indoor Wi-Fi 7 APs in the same class
Spatial Streams (MIMO): 4x4:4 on each of the three client radios (2.4 GHz, 5 GHz, 6 GHz); MU-MIMO and OFDMA supported
Aggregate Throughput: Up to 7.78 Gbps tri-radio aggregate (maximum over-the-air PHY/chipset frame rate, not per-client throughput)
Radios (bands): Tri-radio 4x4:4: 2.4 GHz client radio, 5 GHz client radio, 6 GHz client radio; plus tri-band scanning radio (2.4/5/6 GHz) for security/RF analytics and a 2.4 GHz Bluetooth Low Energy radio
Uplink Port Speed: 1x multigigabit RJ45 (100 Mbps / 1 Gbps / 2.5 Gbps / 5 Gbps BASE-T); also 1 USB 2.0 Type-A port
Max Clients: Not published in the sources reviewed
PoE Requirement: 802.3bt (UPOE) 30.5 W for full functionality including USB; 802.3at (PoE+) 25 W supported with reduced functionality and no USB; 802.3af not supported; 54 V DC option available
Form Factor: Indoor ceiling/wall-mount access point; omnidirectional (CW9166I) or directional (CW9166D1) antenna variants
Dimensions: 241.3 x 241.3 x 56.9 mm (CW9166I) / 57.9 mm height (CW9166D1); approx. 1.6 kg
✔ Pros:Tri-band Wi-Fi 6E with 4x4:4 on every client radio for high-density capacity; dedicated tri-band scanning radio for WIPS, spectrum analysis, and location analytics; multigigabit 5 Gbps uplink on a single RJ45 port; Bluetooth Low Energy radio for beacons and asset tracking; supports both Catalyst 9800 controller and Meraki cloud management; full functionality on 802.3bt PoE with USB output
✘ Cons:Full feature set requires 802.3bt (UPOE) power, and 802.3at operation reduces functionality; only one uplink port, so no link aggregation or redundancy; premium price compared with many Wi-Fi 6E APs; maximum client count is not published in available sources; Catalyst (CW9166I-B/-E) and Meraki (CW9166I-MR) SKUs are the same hardware under different management licences, which can confuse purchasing; end-of-sale/end-of-life status is unconfirmed and should be checked with Cisco