4000 Series Vr Kit With Codelock Surface 2 WayVandal Resistant audio entry kit based on the 4000 Series modular design incorporating two way speech, electronic call tone and lock release facility. The door station is available surface or flush mounting with up to 12 VR call buttons with standard engraving or bespoke engraving option. The standard finish is a 12 gauge brushed stainless steel facia with gun metal grey frame. The frame is also available in silver chromium plating (/C) and gold chromium plating (/G). The telephone is wall mount with a lock release button, a spare dry contact service button and a three position call tone volume control. Up to 2 additional telephones can be installed in each apartment. A code lock can be added (/CL). The codelock has 2 codes, 2 changeover relay outputs and an override input. It can be programmed from 1-99 seconds or latching output. The audio kit comes with a 3000 series style audiophone Art.3111 as standard and an Art.520M (13Vac/8-12vdc) power supply.