Profile: Deaf Alerter Plc is a supplier of emergency communication systems. We are an ISO 9001: 2000 certified company. Our products include deaf alerter, refuge alerter, induction loops and staff alerter. Deaf alerter is a radio-based fire alarm warning & public address messaging system for deaf and hard of hearing people. It solves the problem that they cannot hear audible alarm or public address systems. Refuge alerter is a radio based emergency voice communication system which is rapid to install and offers significant benefits over traditional hard-wired systems.