Overview
The Hikvision HM‑TD2668‑25/G0/T1Y is a bi‑spectrum network bullet camera combining a 640×512 VOx thermal imager (12 µm) with a 1/2.7" progressive‑scan optical sensor (≈2688×1520). Designed for long‑range detection, temperature‑exception alarms and rugged outdoor use, the unit supports image fusion, picture‑in‑picture, AI‑based VCA and multiple I/O/network interfaces for integration into professional security systems.

• Thermal: 640×512 VOx, 12 µm, 25 mm focal length; NETD ≤20 mK; temperature measurement & dynamic fire detection.
• Optical: 2.7MP (2688×1520) 1/2.7" CMOS, 8 mm fixed lens, IR illumination for low‑light scenes.
• Smart features: Bi‑spectrum fusion, picture‑in‑picture, AI VCA (human/vehicle classification) and temperature alarm rules.
• Rugged: IP67, IK10, NEMA 4X, wide operating range (‑40 °C to 70 °C) and TVS lightning/surge protection.

Use cases
Ideal for perimeter protection, critical‑infrastructure monitoring, industrial sites and large site surveillance where both thermal detection and optical detail are required. Suitable for professional installation by qualified engineers; not a consumer DIY product.

Compliance & safety
Refer to manufacturer documentation for CE/UKCA marking, installation, wiring and commissioning. For safe operation and valid warranty, have the camera installed by a qualified security/AV installer or electrician. Use appropriate surge protection and conform to local regulations for fixed electrical equipment.

What’s in the box (typical)

• HM‑TD2668‑25/G0/T1Y bi‑spectrum bullet camera
• Mounting template and screws
• Quick start guide / warranty card
• Power connector / waterproof cap (as per region packaging)