Modular 4000 series "3+1" audio entry kits incorporating two way speech, electronic call tone and lock release facility.

The entry panel is available surface or flush with kits ranging from 1 button up to 12 call buttons. The entry panel consists of a 4836 speaker with either 0, 1 or 2 buttons and the appropriate 4000 series button modules (4843, 4844 and/or 4845) depening on the audiokit required.

The standard finish for the 4000 series fascia is a matt 316 brushed stainless steel with a 4000 series gun metal grey surround front support frame. The kits are also available with a gun metal grey front fascia, suffix /BL to the audiokit part code e.g. 4K-5S/BL (5 button surface audiokit with gun metal grey fascia).

The audiokits are supplied with surface wall mount 3011 smart series audiophones, which incorporate a lock release button and a three position call tone volume control. Up to 2 additional audiophones can be connected in each apartment (3 audiophones per call button max.). The kits are also supplied with 13Vac psu (321 or 322 depending on the audiokit required).