Ajax DoorBell Black – Smart Video Intercom with AI, PIR, and HDR Camera

Ajax DoorBell Black – Smart Video Intercom with AI, PIR, and HDR Camera

NEW

66391.125.BL1 # 66391 | Ajax DoorBell Black is a smart video intercom designed to provide advanced security and intelligent entrance 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

Technical Data Sheet

Reference: 66391.125.BL1

Brand: Ajax Systems

EAN: 4823114066146

Disponibilità: 5

Manufacturer Object ( [id] => 31 [name] => Ajax Systems [description] =>

Born in 2011, Ajax System produces alarm and fire systems with JEWELLER radio protocol, a wireless technolog that allows to connect with a few taps the detectors in the mobile app. The Ajax System security system is easy to install in your apartment, home or office. By choosing Ajax System, you get integrated protection that is easy to manage, tamper-resistant and responds instantly to attacks. Ajax  System devices are easy to be installed: just 15 seconds to connect the control panel to the detectors. They can also support third-party surveillance cameras, making Ajax System a singular security center.

[short_description] =>

Ajax SystemsAjax Systems

The alarm systems by Ajax System use a state-of-the-art wireless technology, thus making the devices very reliable and always connected. Ajax System detectors combine the best components with conceptual design.

[id_address] => [date_add] => 2019-01-15 15:51:16 [date_upd] => 2025-06-11 12:47:32 [link_rewrite] => ajax-systems [meta_title] => State-of-the-art alarm and fire systems - Ajax System [meta_keywords] => ajax system,ajax systems,system ajax ,ajax security system,ajax notification system [meta_description] => Alarm systems by Ajax System are innovative, reliable and user-friendly wireless devices. Find them all on Setik.biz [active] => 1 [webserviceParameters:protected] => Array ( [fields] => Array ( [active] => Array ( ) [link_rewrite] => Array ( [getter] => getLink [setter] => ) ) [associations] => Array ( [addresses] => Array ( [resource] => address [setter] => [fields] => Array ( [id] => Array ( [xlink_resource] => addresses ) ) ) ) ) [id_lang:protected] => 1 [id_shop:protected] => 1 [id_shop_list] => Array ( ) [get_shop_from_context:protected] => 1 [table:protected] => manufacturer [identifier:protected] => id_manufacturer [fieldsRequired:protected] => Array ( [0] => name ) [fieldsSize:protected] => Array ( [name] => 64 ) [fieldsValidate:protected] => Array ( [name] => isCatalogName ) [fieldsRequiredLang:protected] => Array ( ) [fieldsSizeLang:protected] => Array ( [meta_title] => 255 [meta_description] => 512 ) [fieldsValidateLang:protected] => Array ( [description] => isCleanHtml [short_description] => isCleanHtml [meta_title] => isGenericName [meta_description] => isGenericName [meta_keywords] => isGenericName ) [tables:protected] => Array ( ) [image_dir:protected] => /var/www/html/img/m/ [image_format:protected] => jpg [translator:protected] => [def:protected] => Array ( [table] => manufacturer [primary] => id_manufacturer [multilang] => 1 [fields] => Array ( [name] => Array ( [type] => 3 [validate] => isCatalogName [required] => 1 [size] => 64 ) [active] => Array ( [type] => 2 ) [date_add] => Array ( [type] => 5 ) [date_upd] => Array ( [type] => 5 ) [description] => Array ( [type] => 6 [lang] => 1 [validate] => isCleanHtml ) [short_description] => Array ( [type] => 6 [lang] => 1 [validate] => isCleanHtml ) [meta_title] => Array ( [type] => 3 [lang] => 1 [validate] => isGenericName [size] => 255 ) [meta_description] => Array ( [type] => 3 [lang] => 1 [validate] => isGenericName [size] => 512 ) [meta_keywords] => Array ( [type] => 3 [lang] => 1 [validate] => isGenericName ) ) [classname] => Manufacturer [associations] => Array ( [l] => Array ( [type] => 2 [field] => id_manufacturer [foreign_field] => id_manufacturer ) ) ) [update_fields:protected] => [force_id] => ) 1
FIND INSTALLER


FREE TVCC SIGN!×


With all >> AJAX KITS

CLEARANCE SALE ×


 CLEARANCE SALE! 
Take advantage of our must-see outing offers.
  Discover the promo >> 

66391.125.BL1 | VIDEO INTERCOM WITH BUILT-IN AI, PIR SENSOR, AND APP CONTROL


Ajax

Ajax DoorBell, 66391.125.BL1, black , 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

Optics:
Ajax DoorBell is equipped with a wide-angle HDR lens with a 155° horizontal and 90° vertical viewing angle , designed to completely cover the area in front of the entrance and ensure detailed and balanced images even in the presence of strong light contrasts.
Resolution :
It integrates a 4 MP CMOS sensor with a resolution of up to 2688 × 1520 pixels , ensuring high definition video , precise recognition of details and reliable visual verification of events .
Video streaming:
JetSparrow video streaming ensures smooth , stable, low-latency transmission , with instant live view , quick archive navigation, and consistent video quality even over complex networks.
Communication channel :
It uses Wi-Fi as the main channel , and if connected to an Ajax hub, it has a backup channel via Jeweller and Wings protocols , ensuring continuity of transmission of events, images and alarms even in case of Wi-Fi loss .
Main features:
Smart outdoor video intercom with HDR camera , high-quality two-way audio , infrared night vision up to 6 m , secure streaming , protected storage and full integration into the Ajax ecosystem .
AI Detection:
The integrated artificial intelligence system enables accurate recognition of people, animals and vehicles , reducing false alarms and triggering intelligent recordings based on relevant events.
Anti-sabotage protection:
It includes anti-tampering , disassembly notifications , secure authentication , communication encryption and customizable access control , ensuring high standards of physical and digital security .
Power supply:
Supports AC/DC wired power with built-in rechargeable backup battery , ensuring continuous operation even in case of main power failure .

Technical data sheet

66391.125.BL1

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
  • People
  • Pets
  • Vehicles
Smart IR illumination
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:
145 × 47 × 34 mm
5.71" × 1.85" × 1.34"
Weight
163 g
5.75 oz
Operating temperature range
from 0 °C to +60 °C
from 32°F to 140°F
Operating humidity
up to 90%
Protection class
IP54

Colors Black
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
All our products are in conformity with the in force CE normative (read here). To ask for a copy of the certification fill out this form

OTHER PRODUCTS RELATED TO THIS ITEM