Overview:
The Cisco Aironet 1840I is a high-performance access point built for small to mid-size enterprises. It combines 802.11ac Wave 2 technology and Bluetooth Low Energy (BLE) for reliable wireless connectivity and location-based services.
Software Requirements:
- Cisco Unified Wireless Network Software: Release 8.8 MR2 or later
- Cisco IOS® XE Software: Release 16.12 or later
Controller Compatibility:
- Cisco Catalyst 9800 Series
- Cisco 3500, 5520, 8540 Series
- Cisco Virtual Wireless Controller
- Cisco Mobility Express
Wireless Capabilities:
802.11n (v2.0):
- 5 GHz: 4×4 MIMO with four spatial streams
- 2.4 GHz: 2×2 MIMO with two spatial streams
- Beamforming (802.11n/a/g)
- Max Data Rate: Up to 744 Mbps
- Features: MRC, A-MPDU/A-MSDU, DFS, CSD
802.11ac:
- 4×4 Downlink MU-MIMO
- Max Data Rate: Up to 1.73 Gbps
- Channel Widths: 20/40/80 MHz
- Features: MRC, Beamforming, A-MPDU/A-MSDU, DFS, CSD
Antenna:
- Internal, omnidirectional in azimuth
- 2.4 GHz: Peak gain 4 dBi
- 5 GHz: Peak gain 5 dBi
Interfaces:
- 2 × 10/100/1000BASE-T RJ-45 (with PoE support)
- RJ-45 Management Console Port
- USB 2.0 (future support)
Indicators:
- Multicolor LED: Status, errors, associations
Physical Specifications:
- Dimensions: 7″ x 7″ x 1.5″ (W x L x H)
- Form Factor: Wall or ceiling mount
- Weight: Not specified (refer to datasheet if needed)
Power Options:
- 802.3at PoE+, Cisco Universal PoE (UPOE)
- Supported Injectors: AIR-PWRINJ6=, AIR-PWRINJ5= (802.3af only)
- Power Consumption: 13.2W (PSE) / 12.1W (PD) without USB, 17.8W (PSE) / 16.0W (PD) with USB enabled
- Note: USB disabled when powered via 802.3af
Environmental Specs:
- Operating Temp: 32°F to 122°F (0°C to 50°C)
- Storage Temp: -22°F to 158°F (-30°C to 70°C)
- Operating Humidity: 10% to 90% (non-condensing)
- Altitude: Up to 9,843 ft operating, 15,000 ft storage
- Note: Radio duty cycle may be reduced above 40°C
Memory:
- DRAM: 1 GB
- Flash: 256 MB
Transmit Power Levels:
2.4 GHz:
- Range: -1 dBm (0.79 mW) to 20 dBm (100 mW)
5 GHz:
- Range: 2 dBm (1.56 mW) to 23 dBm (200 mW)
Frequency Bands & Channels (Regulatory Domain I):
- 2.4 GHz: 2.412 – 2.472 GHz (13 channels)
- 5 GHz: 5.180 – 5.320 GHz (8 channels)
