Ajax DoorBell (4 MP) – Smart Video Doorbell with AI, Hardware PIR & Dual-Path Backup Link (Black, 9NA)

Product Overview

The Ajax DoorBell (4 MP) (SKU: 116886.125.BL3, 9NA region frequency) is a professional-grade wireless smart video doorbell engineered to provide complete visual control, access management, and intrusion deterrence at the front door. Combining an ultra-high-definition 4 MP (2688 x 1520 px) CMOS sensor with High Dynamic Range (HDR) and an ultra-wide 155° horizontal field of view, it captures edge-to-edge situational awareness across porches, entry gates, and delivery drop zones.

Engineered with dual-channel communication redundancy, Ajax DoorBell streams primary video over 2.4 GHz Wi-Fi (802.11 b/g/n) while maintaining a secure fallback link with an Ajax Hub via proprietary Jeweller and Wings wireless radio protocols across open spaces up to 1,700 meters (5,550 ft). Equipped with a hardware PIR motion sensor, edge AI-powered object classification (identifying humans, pets, and vehicles), two-way audio with active noise suppression and echo cancellation (G.722 codec), smart Infrared (IR) night vision up to 6 meters, and an internal rechargeable backup battery, it delivers perimeter security in an IP54 weather-sealed matte black finish.

Key System Features & Functionality

• High-Definition 4 MP HDR Imaging: Captures crisp 2688 x 1520 px video @ 25 fps with HDR multi-exposure balancing for high-contrast sunlight and shadow transitions.

• Ultra-Wide 155° Field of View: Expansive diagonal/horizontal coverage ensures complete visibility of visitors from head to toe as well as doorstep delivery packages.

• Dual-Layer Detection (Hardware PIR + Edge AI): Integrates an optical PIR motion detector (up to 4 m / 13 ft) combined with on-device AI to distinguish people, animals, and vehicles, filtering out false alerts.

• Wi-Fi + Jeweller/Wings Fallback Link: Connects via Wi-Fi for primary video streaming and maintains encrypted Jeweller/Wings RF backup up to 1,700 m to deliver alarm signals during Wi-Fi interruptions.

• High-Fidelity Two-Way Audio: Integrated microphone and loudspeaker with G.722 codec, active noise reduction, and echo cancellation for clear, delay-free visitor communication.

• Smart IR Night Vision up to 6 m: Adaptive infrared backlight automatically regulates intensity based on distance to prevent overexposure on visitors' faces in complete darkness.

• Flexible Power & Battery Backup: Operates on standard 12-24 VDC or 16-24 VAC transformer wiring (BellKit adapter included) with an integrated 600 mAh Li-Ion backup battery.

• Anti-Sabotage Tamper Defense: SmartBracket mounting panel features an integrated tamper switch that immediately notifies the Ajax app and CMS if the unit is unlatched or detached.