This H.264 2MP HD Smoke Induction Alarm Detector DV supports HD-TVi, HD-CVI, and AHD technologies. The 2.0MP CMOS camera lens ensures fine resolution and high-fidelity shooting. Besides that its designed into a compact size, Its discrete lens make it difficult for people to know they are being recorded. In addition, it features elegant appearance, easy operation and practicability. 2 Yr support ensures It will never let you down!