HIKVISION 2MP Camera Turbo Full HD Siren Audio Fixed Bullet, DS-2CE12DF3T-PIRXOS
Detects human body through heat-sensitive passive infrared (PIR). Fixed lens: 2.8 mm (aperture angle 104°). High quality audio with audio over coaxial cable, built-in mic, and built-in speaker. 2.8 mm, 3.6 mm, 6 mm fixed focal lens.