Marmitek introduces DoorGuard 100

Marmitek's DoorGuard 100 is a video door telephone system that contains a doorbell camera and monitor. Up to four intercom-connected monitors may be connected to the monitor, allowing discussion of whether a visitor at the door should be allowed in via electric door lock. The monitor has a four-inch black-and-white screen and a bell sound that is volume adjustable. The camera has a built-in microphone and loudspeaker.
For more information about this product, visit Marmitek's web site at