STS-K020 Retrofit Glass Mounted System

This window intercom system is specifically designed to retrofit into a glass window where an existing system has left a hole in the glass.  The glass mounted customer microphone is attached with two ballistic-proof polycarbonate plates that are threat level IIIA rated.  The kit comes with either a flush mounted overhead speaker (STS-S30) or an overhead speaker with a bracket (STS-S22).


For use in any situation where one to one communication takes place at a counter, booth or desk, such as:

  • Banks
  • Post Offices
  • Supermarkets
  • Ticket Kiosks
  • Information Centers
  • Airports

System Components

Speech Transfer Amplifier

Our amplifier provides full open duplex communication and is compatible with all of our speech transfer products.

STS-S23 Overhead Speaker Module

A surface mounted, sealed speaker for overhead installation.

STS-SU1 Staff Unit

Our free-standing combined speaker and directional microphone module for the staff side has an integral loudspeaker, microphone with a semi-rigid stem, adjustable neck and mute switch.

Anti-Vandal Microphone with Glass Mount Kit

Our customer side, anti-vandal, and screen mounted directional microphone with dual polycarbonate plates.

Glass Mounted Hearing Loop Aerial

This hearing loop sticker is installed onto the glass and has a built in hearing loop aerial.

PS-55 Power Supply

The PS-55 Power Supply is a Level VI power supply

Product Sheet

InfoComm 2019: Contacta Unveils Its New STS-K020 Play

Window Intercom Hub

Visit our Window Intercom Hub for more information about our systems and for help choosing the right one for your application.

Get In Touch

Need help choosing the right system?
Get in touch today our team is here to help.

Get In Touch

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.