- COVERT CAMERA HOUSED IN A WORKING SMOKE DETECTOR FOR HIGH-PERFORMANCE, COVERT SURVEILLANCE ; NTSC COMPOSITE VIDEO; AUTO ELECTRONIC IRIS; 3.6MM, FIXED FOCUS WIDE-ANGLE LENS; RCA TYPE VIDEO & 2.1MM DC JACKS; FOR CEILING-MOUNT INSTALLATIONS; INCLUDES 12V DC POWER SUPPLY, 50-FT VIDEO/POWER CABLE & MOUNTING HARDWARE; DIM: 1" DIA X 1.75"H; WEIGHT: 4 OZ; B&W; 1/3" CCD; LIGHT SENSITIVITY: 0.3 LUX; 420 LIN