Overview
The Ajax DoorBell (66390.125.WH1) is a professional-grade video doorbell designed to integrate with the Ajax security ecosystem. It pairs a 4 MP HDR camera with a PIR motion sensor and on‑device AI to reduce false alarms and classify detections (people, pets, vehicles). Suitable for residential and light commercial front‑door monitoring and intercom use.

• 4 MP HDR camera with wide field of view for clear daytime footage and improved dynamic range.
• AI object detection (people, pets, vehicles) to reduce false alerts and improve event relevance.
• PIR motion sensor with adjustable sensitivity; combined with AI for reliable detection.
• Smart IR illumination for night/low‑light viewing (up to 6 m).
• Two‑way audio with G.722 codec, noise suppression and echo cancellation.
• Communications: primary Wi‑Fi (2.4 GHz) video plus Ajax Jeweller & Wings for alarm/backup messaging.
• Power: 12–24 V DC (or 16–24 V AC) with internal rechargeable Li‑ion battery backup.
• Weather resistant: IP54 enclosure for sheltered external installation.

Use cases: front‑door video surveillance, integrated doorbell/intercom, delivery verification, perimeter alerting for homes and small businesses. Integrates with Ajax hubs and storage options (Ajax NVR; Ajax Cloud where available).

Safety & compliance: Confirm region‑specific certifications (CE / UKCA) and local installation requirements with the vendor or official datasheet—INSUFFICIENT DATA in record to state certification explicitly. Observe standard electrical safety procedures when connecting to mains; installation should be performed by a qualified electrician where local regulations require.