The JK-1HD is a sub monitor for the JK hands-free color video series. The unit features a 3-1/2" TFT Color monitor, a TALK button for PTT or VOX activated communication, button for Pan/Tilt/Zoom control, Call button to call master monitor, and button for brightness controls. The JK series offers a 170° camera view and gives the user the ability PanTilt and Zoom the camera to a desired area for a better view of the visitor. The JK series offers a backlight/night sensitivity adjustment. In low light (night time) and heavy background light (sunny day) situations, the user can press the ADJUST button to improve the image quality to aid them in identifying the visitor.