The Auerswald TFS-Dialog 313 is a versatile doorbell and intercom system designed for operation on analog extension connections of telephone systems. It supports up to four doorbell buttons and can also be used as a light switch. The programming of phone numbers and basic functions is conveniently done via a telephone. The system offers two sensitivity levels to adapt to different ambient noise conditions. The wear-free switching contacts ensure reliable operation for the door opener, doorbell, and light, with a doorbell transformer required. The integrated LED lighting is energy-efficient and allows for stepless adjustment of the color tone from cool white to warm yellow. Additionally, extra switching options can be realized through optional a/b switching modules.

• Operation on analog extension connections of various telephone systems
• Two sensitivity levels for different environments
• Wear-free switching contacts for door opener, doorbell, and light
• Energy-efficient, steplessly adjustable LED lighting
• Optional expansion through a/b switching modules.