This kit includes a demo board with the ultraminiature, ultralow-power ADL021 magnetic switch. An LED shows the sensor output. The board is powered by a three-volt lithium coin cell (included), and the sensor quiescent power consumption is so low that the battery will last indefinitely.
A miniature bar magnet is included so you can see for yourself how these remarkable sensors work.
Sensor quiescent current is only 100 nA typical; the sensor operate point is 20 Oe; and the sensors are 1.1 mm x 1.1 mm.
These miniature evaluation boards are just 0.25 x 1.57 inches (6 x 40 mm).