Check out our audio alerting/signaling systems and devices which are:
sound detectors for baby cry signalers, telephone ring signalers, sonic ring devices, sonic alert receivers, remote receivers, blinking strobe lights receivers, loud horn receivers and doorbell signalers.

Visit our online store at: http://www.devices4less.com/Alerting.html

Or call to speak to a representative at: 1-800-328-6684