The Vintage 1970's Talk-a-phone Intercom K-CL-5 Master (2501) is a retro door entry system unit that offers audio intercom capabilities. This brand new in box system from the 1970s features the Talk-a-phone brand and model K-ML-5W, providing a unique and nostalgic addition to any home or garden. Perfect for those looking for a vintage touch to their home security setup, this intercom allows for easy communication and monitoring within the household.