The JP-DV is an aluminum die cast surface mount color video door station. Works with the JP Series and connect to the master station using an 18AWG 2-conductor solid core cable. Includes a camera, microphone, speaker, and call button. Tamper resistant screws are provided for mounting. The JP-4MED is a video master station with a 7” color touchscreen LCD. The JP-4MED offers handset (duplex) and hands-free (VOX) communication. This unit will support up to 4 door stations and 8 inside stations. All inside stations are equipped with a door release button for the user to allow visitor entry. The PS-2420UL is a DC 24V Class II power supply used for Aiphone intercom applications. This power power supply is UL and CSA listed and is designed for indoor use only.