66390.125.WH1 # 66390 | Ajax DoorBell White is a smart video intercom designed to offer advanced security and intelligent entry control. It integrates a 4 MP wide-angle HDR camera , a PIR sensor for motion detection , and AI-based object recognition that can distinguish between people, animals, and vehicles. Smooth video streaming with JetSparrow technology and infrared night vision up to 6 m ensure clear images in any conditions. Wi-Fi communication with a backup channel via the Ajax hub ensures operational continuity even in the event of a network loss. The system is completed by two-way audio with noise cancellation and a built-in backup battery , for reliable, always-on protection. Ajax
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66390.125.WH1 | VIDEO INTERCOM WITH BUILT-IN AI, PIR SENSOR, AND APP CONTROL

Ajax DoorBell, 66390.125.WH1, white , is a smart outdoor video intercom designed to provide professional security and intelligent entry control. It combines a 4 MP wide-angle HDR camera , a PIR sensor for motion detection , and AI-based object recognition capable of distinguishing people, animals, and vehicles. Smooth video streaming with JetSparrow technology and infrared night vision up to 6 m ensure clear images in any conditions. Wi-Fi communication with a backup channel via the Ajax hub ensures operational continuity even in the event of a network loss, while two-way audio with noise cancellation allows for immediate and secure interaction with visitors.
Main specifications:
- 4MP HDR camera with wide viewing angle
- Intelligent AI recognition of people, animals and vehicles
- PIR sensor for accurate motion detection
- Fast and stable JetSparrow video streaming
- Infrared night vision up to 6 meters
- Two-way audio with noise cancellation and built-in backup battery
Further details
Technical data sheet
66390.125.WH1 |
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| Video stream | Room 4 MP CMOS sensor Resolution up to 2688 × 1520 px Camera viewing angles horizontal: 115° vertical: 90° Video protocol JetSparrow Fast and encrypted peer-to-peer video protocol developed by Ajax Systems. Ajax Cloud (coming soon) NVR Video codec H.264 Dynamic range HDR Improves the accuracy of detail in bright and dark scenes. |
| Communication channel | Wi-Fi 802.11 b/g/n module 2.4 GHz, up to 2 Mbit/s for the channel 2K video Jeweler and Wings communication technologies Proprietary wireless communication technologies to transmit commands, alarms, events, and photo verifications. They serve as a backup communication channel when the device is added to the hub. |
| Key features | Two-way communication Clear and loud voice communication between users and the device. Motion detection The device detects movement using a built-in PIR sensor and image frame analysis software Object detection using AI
up to 6 m up to 20 ft Automatic adjustment of intensity in real time to avoid overexposure. This allows you to see objects that are far away or too close to the camera in low-light conditions Visual verification of Ajax alarms The system allows you to set up a scenario when Ajax detectors activate selected cameras to start recording. The result is immediately sent to the mobile or desktop monitoring app Microphone For two-way communication and sound recording at the site. Audio codec G722 Audio processing Always active noise suppression and echo cancellation |
| PIR detection | Sensitive elements 1 × PIR sensor Motion detection distance up to 4 m up to 13 ft Depends on the sensitivity level adjusted in the device settings Motion detection angle horizontal: 120° vertical: 100° Sensitivity 3 levels Adjusted by a PRO or a user with admin rights in Ajax apps |
| Installation recommendations | It is recommended to install the device at a height of 1.2–1.5 m. It is recommended to install the device at a height of 4–5 ft. The device is designed for indoor use only. It is not recommended to install the device in direct sunlight. This may cause overheating and damage to the device's electrical components. |
| Sabotage protection | Tamper alarm Notifications of attempts to remove the device from the mounting panel. Holding screw secures the device on the mounting bracket mTLS: Encrypted connection for data protection. Authentication: via Ajax Cloud Without local access rights Secure Boot: Protection against firmware spoofing. OTA signature verification: Secure automatic firmware update. Privacy Access rights distribution for users in mobile apps and for monitoring operators in PRO Desktop. Communication loss detection Wi-Fi: can be set from 30 s Jeweler/Wings: after 36 s Detection time depends on Ajax Cloud connection and Jeweler or Jeweler/Fibra settings |
| Power supply | Device power consumption 10 W Main DC voltage range 12–24 V⎓ Main AC voltage range 16–24 V~, 50/60 Hz Battery built-in rechargeable battery: Li-ion 600 mАh Intended to heat the device in a cold climate and provide a backup power supply for short periods |
| Enclosures |
Dimensions: |
| Colors | White |
| Complete set | DoorBell SmartBracket mounting panel Wedge bracket (2 pcs) BellKit (for connection to a wired chime) Installation kit Quick start guide |
| Warranty | 24 months |



