Measuring only 1.11 mm3, Coto Technology Inc. says the RedRock RR100 sensor is half the size of its original design and the world’s smallest MEMS-based magnetic reed sensor. The single-pole, single throw (SPST) device with normally open ruthenium contacts can be actuated by an electromagnet, a permanent magnet, or a combination of both. The sensor’s closure sensitivity ranges from 10 to 25 milliTesla allowing operation from up to 20 mm away using a small NdFeB magnet. Its small size and directional magnetic sensitivity allows for high-resolution fluid level and position sensing and target medical applications such as portable insulin pumps, capsule endoscopes, next generation hearing aids, insulin pens, medical wearables, and other small, battery-powered medical electronic devices.
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