The Algo 24V 1127 Visual Alerter is an attractive high-performing LED light that provides visual indication of telephone ringing in noisy or noise-sensitive environments such as restaurants, call centers, financial trading floors, hospital maternity wards, libraries, churches, studios, or courtrooms. Other common applications include alerting for security, safety, and process control events.

A relay or audio detection is required for activating the 1127 Visual Alerter.