The MyAlert Digital Radio Frequency (DR-F) wireless remote receiver connects to all of the MyAlert transmitters to capture and alert signals for telephone, smart phone, door, window and a range of sounds. This body-worn receiver is a cost-effective, safe and secure solution to alert you to those important sounds you may be missing. The unit provides mounts of use on inexpensive batteries, with class-leading range so working in the back yard will no longer be a problem. The BWR100 uses Silent Call's unique million-code technology, which means no more false flashing from a neighbors system. Complete with 24/7 safe system supervision, this reliable portable receiver will always notify you if any part of the system is not working.