Cisco Aironet AIR-AP1852I-x-K9
Listing Title
Cisco Aironet AIR-AP1852I-x-K9 802.11ac Wave 2 Dual-Band Indoor Wireless Access Point, Built-in Internal Omni Antennas, 4×4 MU-MIMO, Dual Gigabit Ethernet Ports, Supports CAPWAP Controller Deployment; K9C Variant Supports Mobility Express Standalone Virtual Controller ModeCisco
Full Commercial Product Description
The Cisco Aironet AIR-AP1852I-x-K9 belongs to enterprise-class Cisco Aironet 1850 Series indoor wireless access points, designed for small-to-medium businesses, corporate branch offices, K-12 and higher education campuses, and retail venues with medium-to-high concurrent client loadsCisco. Two factory firmware variants are available:
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StandardAIR-AP1852I-x-K9: Operates exclusively in CAPWAP centralized controller managed mode, compatible with Cisco Catalyst 9800, 5520, 8540 physical Wireless LAN Controllers and virtual WLCs.
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AIR-AP1852I-x-K9C: Preloaded with Mobility Express software, capable of running as a standalone virtual wireless controller for networks without dedicated physical WLC hardwareCisco.
Compliant with IEEE 802.11a/b/g/n/ac Wave 2 (Wi-Fi 5) standards, the AP equips two independent concurrent radios for simultaneous 2.4 GHz and 5 GHz coverage with asymmetric high-performance MIMO architecture:
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2.4 GHz Radio: 4×4 SU-MIMO with 4 spatial streams, supports 20MHz / 40MHz channel bandwidth
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5 GHz Radio: 4×4 MIMO, 4 spatial streams for SU-MIMO, 3 spatial streams for MU-MIMO, supports up to 80MHz wide channels, peak single-band PHY throughput up to 1.7 Gbps on 5GHz, total combined dual-band throughput for massive mobile device, HD video and cloud collaboration workloads.
The AIR-AP1852I-x-K9 integrates fully embedded internal omnidirectional dual-band antenna arrays without external RTNC antenna ports. Antenna gains: 3 dBi for 2.4GHz band, 5 dBi for 5GHz band, delivering uniform wide-area indoor RF coverage and eliminating messy external antenna cabling for flush ceiling or wall installation.
Core Cisco RF optimization technologies are fully embedded to deliver stable high-density wireless experience: Transmit Beamforming strengthens downlink signal strength, eliminates coverage dead zones and extends mobile device battery life; BandSelect automatically steers dual-band capable clients away from congested 2.4GHz to cleaner 5GHz spectrum; Radio Resource Management (RRM) dynamically adjusts radio working channels and transmit power across the entire wireless domain; built-in rogue AP detection identifies unauthorized rogue wireless hotspots to reinforce enterprise network security boundaries. The platform also supports multiple flexible deployment modes including FlexConnect, Monitor, OfficeExtend and Mesh networking to adapt diverse enterprise network architectures.
Hardware Interfaces & Power Specifications
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2 × 10/100/1000BASE-T auto-sensing Gigabit RJ45 ports: Primary POE uplink port for power supply, secondary AUX port supporting IEEE 802.3ad LACP link aggregation for doubled wired uplink bandwidth.
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1 × RJ45 RS-232 local console port for device configuration and troubleshooting
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1 × USB 2.0 auxiliary port, software-enabled for storage and diagnostic extensions.
Power Supply Compatibility:
Supports IEEE 802.3af PoE, IEEE 802.3at PoE+, Cisco UPOE, AIR-PWRINJ5 (af injector), AIR-PWRINJ6 (at injector). Full radio performance requires PoE+ / UPOE power input.
Environmental & Physical Parameters
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Operating temperature range: 0°C ~ 40°C (32°F ~ 104°F) for standard indoor climate
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Storage temperature range: -30°C ~ 70°C (-22°F ~ 158°F)
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Operating humidity: 10% – 90% non-condensing
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Physical dimension: 8.3 × 8.3 × 2 inches (210.8 × 210.8 × 50.8 mm); total weight 1.41 kg (3.12 lb)
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Mounting compatibility: Standard ceiling rail flush mounting, wall bracket mounting, compatible with official Cisco mounting kits.
Comprehensive enterprise-grade security suites are fully supported: WPA/WPA2 encryption with AES algorithm, 802.1X port-based AAA authentication, multiple EAP authentication protocols, 802.11r fast roaming for seamless VoIP voice call handoff, VLAN traffic segmentation and WMM QoS mechanism to prioritize voice, video and core business data traffic. It also supports MAC address filtering, dynamic frequency selection (DFS), A-MPDU/A-MSDU packet aggregation for improved airtime efficiencyCisco.
The suffix "x" in the part number represents different global regional regulatory domains (A, B, C, K, S, H etc.) to comply with local radio frequency spectrum regulatory standards worldwideCisco.
Key Specification Bullet Points
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Model: AIR-AP1852I-x-K9
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Wi-Fi Standard: IEEE 802.11a/b/g/n/ac Wave 2 (Wi-Fi 5)
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Radio Architecture: Concurrent dual-band 2.4 GHz + 5 GHz
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MIMO Technology: 4×4 SU-MIMO (2.4GHz, 4 spatial streams); 4×4 MIMO (5GHz, 4 SU spatial streams / 3 MU spatial streams); max 1.7 Gbps PHY throughput on 5GHz
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Antenna Type: Built-in integrated internal omnidirectional dual-band antennas, no external antenna ports; gain: 3dBi (2.4GHz), 5dBi (5GHz)
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Core RF & Deployment Features: Transmit Beamforming, BandSelect, RRM Radio Resource Management, Rogue AP Detection, FlexConnect / Monitor / OfficeExtend / Mesh multiple deployment modes
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Operation Mode: Standard K9: CAPWAP Controller-Managed Centralized Mode; K9C variant: Mobility Express standalone virtual controller support
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Interfaces: 2 × Gigabit RJ45 Ports (POE Uplink + AUX LACP), 1 × RJ45 RS-232 Console Port, 1 × USB 2.0 Auxiliary Port
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Power Input: IEEE 802.3af PoE, 802.3at PoE+, Cisco UPOE, AIR-PWRINJ5 / AIR-PWRINJ6 power injectors
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Operating Environment: Indoor standard climate; Operating Temp: 0°C ~ 40°C; Storage Temp: -30°C ~ 70°C
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Security Suite: WPA/WPA2, AES, 802.1X, multi-EAP, 802.11r fast roaming, VLAN isolation, WMM QoS, DFS, packet aggregation
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Physical Specs: Weight 1.41kg; dimension 8.3 × 8.3 × 2 in
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Mounting: Ceiling rail flush mount, wall bracket mount
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Typical Application: SMB offices, K-12 & higher education classrooms, retail stores, medium-to-high density indoor enterprise wireless deployments
Model Quick Reference
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AIR-AP1852I-x-K9: Standard CAPWAP-only indoor AP, internal omnidirectional dual-band antennas
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AIR-AP1852I-x-K9C: Dual-mode configurable AP preloaded with Mobility Express standalone virtual controller software
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AIR-AP1852E-x-K9: External RTNC antenna port variant of 1850 Series, extended wide temperature operating range
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1840 Series: Mid-tier 4×4 MIMO platform with lower overall throughput compared to 1852I
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