Contacta Speech Transfer Systems (STS) products, formerly known as Securicom, are designed to allow hands-free communication through security screens in banks, cash offices, bureaux de change and ticket offices, with both loudspeaking and induction loop facilities.

The STS System could also be used to communicate across offices and other work areas. A range of boxed kits is available which contains all necessary components for easy installation. The Surface Mounted System offers Mute facility to ensure privacy, straightforward installation (particularly suitable for retro-fitting), and optimal voice pick-up with minimum background noise.