Cisco Aironet AIR-AP1852E-x-K9
Listing Title
Cisco Aironet AIR-AP1852E-x-K9 802.11ac Wave 2 Dual-Band Indoor Wireless Access Point, 4 External Antenna Ports, Extended Wide Temperature Range, Dual Gigabit Ports, Supports CAPWAP Controller Deployment; K9C Variant Supports Mobility Express Standalone Virtual Controller Mode
Full Commercial Product Description
The Cisco Aironet AIR-AP1852E-x-K9 belongs to enterprise-class Cisco Aironet 1850 Series indoor wireless access points, engineered for small-to-medium businesses, corporate branch offices, K-12 and higher education campuses, retail venues and harsh semi-indoor environments that demand flexible external antenna layout and wider operating temperature tolerance compared to internal antenna 1852I modelCisco. Two factory firmware variants are available:
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StandardAIR-AP1852E-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-AP1852E-x-K9C: Preloaded with Mobility Express software, capable of running as a standalone virtual wireless controller for networks without dedicated physical WLC hardware.
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 high-performance asymmetric 4×4 MIMO architectureCisco:
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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 aggregate throughput up to 2.0 Gbps for massive mobile device, HD video and cloud collaboration workloads.
The core distinguishing feature of AIR-AP1852E-x-K9 is four external RTNC antenna ports, fully compatible with a full lineup of Cisco certified dual-band external antennas (including AIR-ANT2524DB-R, AIR-ANT2524DW-R, AIR-ANT2535SDW-R etc.)Cisco. System integrators can deploy omnidirectional, directional or panel antennas to precisely customize RF coverage shapes for long corridors, partitioned offices, warehouse spaces and special layout environments; this model also supports installation inside NEMA enclosures for harsh semi-indoor deployments, which the internal antenna 1852I cannot supportCisco.
Different from the standard-temperature AIR-AP1852I, the 1852E features an extended wide operating temperature range of-20°C ~ 50°C (-4°F ~ 122°F), suitable for warehouses, unconditioned storage rooms, covered semi-outdoor areas and industrial indoor spaces where temperature fluctuates drastically; storage temperature ranges from -30°C ~ 70°C (-22°F ~ 158°F)Cisco.
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). If powered by only 802.3af PoE, the 5GHz radio will automatically downgrade from 4×4 to 3×3 MIMO, and the USB & AUX Ethernet ports will be disabled; full 4×4 MIMO performance requires PoE+ / UPOE power inputCisco.
Max total power consumption reaches 20.9W with all features fully activated.
Environmental & Physical Parameters
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Operating temperature: -20°C ~ 50°C (-4°F ~ 122°F) (wide extended range, key difference from 1852I)
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Storage temperature: -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; supports installation inside NEMA protective enclosures for harsh environmentsCisco.
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 efficiency, and full 802.11i enterprise wireless security standards.
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 worldwide.
Key Specification Bullet Points
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Model: AIR-AP1852E-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, total aggregate 2.0 Gbps
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Antenna Interface: 4 × RTNC external antenna ports, compatible with full series Cisco dual-band external dipole/panel/directional antennas
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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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Unique Environmental Advantage: Extended wide operating temperature -20°C ~ 50°C, supports NEMA enclosure installation for harsh indoor/semi-indoor environments
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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 (limited performance), 802.3at PoE+, Cisco UPOE, AIR-PWRINJ5 / AIR-PWRINJ6 power injectors; max power draw 20.9W
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Operating Environment: Wide temperature harsh indoor climate; Operating Temp: -20°C ~ 50°C; Storage Temp: -30°C ~ 70°C
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Security Suite: WPA/WPA2, AES, TKIP, 802.1X, multi-EAP, 802.11r fast roaming, VLAN isolation, WMM QoS, DFS, packet aggregation, 802.11i enterprise security
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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, compatible with NEMA protective enclosures
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Typical Application: SMB offices, K-12 & higher education classrooms, retail stores, warehouses, unconditioned indoor spaces, medium-to-high density enterprise wireless deployments with custom antenna coverage requirements
Model Quick Reference
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AIR-AP1852E-x-K9: External RTNC antenna port variant of 1850 Series, wide extended temperature range, supports NEMA enclosure installation
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AIR-AP1852E-x-K9C: Dual-mode configurable AP preloaded with Mobility Express standalone virtual controller software
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AIR-AP1852I-x-K9: Internal integrated omnidirectional antenna variant, standard 0°C~40°C operating temperature, no external antenna support
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1840 Series: Mid-tier 4×4 MIMO platform with lower overall throughput and narrower temperature range compared to 1852E
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