VK4KX-1S. The VK4KX series videokits offer flexible installation, allowing up to 4 video monitors to be connected in parallel, making it ideal for buildings with multiple entrances. The video entry panel includes DDA compliant reassurance tones and call progress LED’s for call in progress, system busy, speak and door open. It also includes a built-in proximity reader which is capable of storing up to 30 user keyfobs.. Surface or flush mounted. 1 x 1-Way camera and speech module. 1 x Colour video monitor. 1 x Power supply unit