Master Monitor Station - The JF-2MED is a hands-free, color video master monitor that allows the connection of up to two video door stations and 2 additional sub monitors. The unit features a 3-1/2" TFT color monitor, a TALK button for PTT or VOX activate communication, a door release button, call-in LED's, door chime and communication volume controls and brightness control. The unit features a built-in picture memory unit that records up to 400 images of visitors. The voice memo feature on the JF-2MED allows users to record up to three ten second messages for replay later. The JF-2MED has a built in picture memory feature that can be set to record automatically when the visitor calls, or the record can be done manually by the user. Up to 50 images can be recorded at a rate of 1 frame per second and 8 frames per image (400 total frames). Up to 10 images (80 frames) can be saved and protected from automatic overwriting. The voice memo feature allows the user to record a short message for someone or a reminder for themselves. Up to 3 voice memos for internal use can be recorded, up to 15 seconds per memo.