Completely Self-Contained. Includes Wide Angle - Self Focus Camera, Cellular Transmitter, PIR (Motion Detector) Microphone, Thermometer, Exit/Entry delays, Arm/Disarm Switch, Internal Timers. Operating Temperature: +14 to +122°F (-10 to +50°C) Lighting Conditions: Normal Light: color images; Low Light: Black and white images using infrared light illuminators. Infrared coverage area is approximately 10 feet (3 meters) Focus Area: Minimum distance 1.5 ft. (0.5 meters) to infinity. Resolution: High 640x480 pixels; Normal 320x240 pixels; Compact 160x120 pixels. Frequency Bands: 850 MHz / 1900 MHz wireless GSM networks. Image Format: JPEG Dimensions w/Base: L: 4.75" x W 3.35" x H 4.0"