Ajax DoorBell 4MP Smart Video Doorbell with AI & PIR – Black 66391.125.BL1

📹 CLEAR 4MP HDR VIDEO

The high-resolution 4MP camera delivers detailed video at up to 2560 × 1440 pixels. Its wide 155° horizontal viewing angle provides excellent coverage of entrances, while HDR technology helps maintain clarity in both bright and shaded areas.

Smart infrared illumination provides visibility at night up to 6 metres, automatically adjusting its intensity to prevent faces and nearby objects from becoming overexposed.

🧠 AI-POWERED DETECTION

Built-in artificial intelligence can distinguish between:

• People
• Animals
• Vehicles

Working alongside the integrated PIR motion sensor, this helps improve detection accuracy and reduce unnecessary alerts. Detection zones can also be adjusted through the Ajax app to focus monitoring on the areas that matter most.

🎙️ CLEAR TWO-WAY COMMUNICATION

Speak directly with visitors using the Ajax app. The built-in microphone and 1.5W speaker provide clear two-way audio, supported by continuous noise suppression and echo cancellation for more natural conversations.

📱 FAST, RELIABLE APP CONNECTION

DoorBell uses 2.4GHz Wi-Fi for live video and communication, with Ajax JetSparrow technology providing fast, smooth and securely encrypted streaming.

It can operate independently or connect to a compatible Ajax hub. When paired with a hub, Jeweller and Wings technology provides a backup communication channel for events, alarms and images if the Wi-Fi connection is interrupted.

🛡️ DESIGNED FOR PROFESSIONAL SECURITY

• 4MP HDR wide-angle camera
• AI recognition of people, animals and vehicles
• Built-in PIR motion sensor with detection up to 4 metres
• Live viewing and instant notifications through Ajax apps
• Clear two-way audio with noise and echo cancellation
• Smart IR night illumination up to 6 metres
• Tamper protection against unauthorised removal
• Built-in rechargeable backup battery
• IP54-rated enclosure for indoor or outdoor installation
• Optional recording through a compatible Ajax NVR
• Connection to an existing wired chime using the included BellKit

⚙️ TECHNICAL SPECIFICATIONS

• Resolution: Up to 2560 × 1440
• Camera: 4MP CMOS sensor
• Viewing angle: 155° horizontal / 90° vertical
• Video codec: H.264
• Wi-Fi: 2.4GHz
• PIR detection range: Up to 4 metres
• IR illumination: Up to 6 metres
• Speaker volume: 85dB
• DC power: 12-24V DC
• AC power: 16-24V AC, 50/60Hz
• Backup battery: Built-in 600mAh rechargeable Li-ion
• Protection rating: IP54
• Operating temperature: -25°C to +60°C
• Dimensions: 145 × 47 × 34mm
• Weight: 163g
• Available colours: Black or White

📦 WHAT’S INCLUDED?

• Ajax DoorBell
• SmartBracket mounting panel
• Two wedge mounting brackets
• BellKit wired-chime bypass
• Installation kit
• Quick-start guide

The Ajax DoorBell provides a powerful standalone entrance-security solution while offering even greater protection when integrated with an Ajax alarm system or NVR.

Need help checking compatibility or choosing between Black and White? Contact the Harbro team for friendly advice before ordering.