The DS-2CD6412FWD-L30 Lens/Sensor Unit from Hikvision connects to the DS-2CD6412FWD-C1/C2 Covert Camera Base Unit (available separately). It features a 1/3" progressive scan CMOS sensor which allows it to capture images at a maximum resolution of 1280 x 960. To achieve a maximum viewing angle of 73.1°, the unit comes with a 2.8mm lens. This lens/sensor unit, along with the base unit, can be used for various applications like ATM surveillance, retail store security, etc.