BTC-500 Camera Door Speaker EB 2D Video black. Color camera door speaker combination for intercom system according to DIN EN 50486 in 2-wire video technology. Combined door speaker and camera module for installation in door stations. Color camera with a viewing angle of up to 80 degrees and a swiveling range of 174 degrees, mechanically adjustable and secured with a special locking screw, as well as a temperature-controlled camera heater. Automatic switching from color to black-and-white operation in darkness with infrared lighting. Integrated door electronics with speaker, microphone volume control, feedback suppression through electronic voice control, connection option for light button, potential-free door opener switching contact with door opener function, acknowledgment tone switchable upon call button activation, and connection for button expander. DREHFIX function: One-person commissioning through addressing with rotary coding switch.