Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971
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Reed sensors in canal hearing aids

Reed sensors in canal hearing aids As widely known, a Hearing Aid is a device designed to improve hearing by making sound audible to a person with hearing loss. Over the years, hearing aids have been getting smaller and smaller from behind-the-ear versions to in-the-ear versions to now, in-canal versions. The behind-the-ear and in-the-ear versions were larger and have micro switches on the body that could be used to adjust the power on-off and volume levels, but in the case of in-canal hearing aids, the device itself is so tiny and inserted inside the ear canal, that remote operation is required. Reed sensors have also shrunk a lot in size and aid themselves for use in such applications, and they also have other added benefits such as not requiring power of operation. A tiny reed sensor or a reed switch fitted inside the hearing aid helps the user adjust volume levels and power cycle the device with an external “wand” or magnet. The hearing aid circuit is programmed to switch the hearing aid between volume levels to power-off state each time the magnet is brought near the ear canal. Reed sensors are also very good at stably switching extremely low signal level currents reliably and are best suited for such hearing aids. Suitable product: R5 ultra-miniature SMD reed sensors.