MultiDimension Technology Co., Ltd. (MDT), a manufacturer of magnetic sensors specializing in anisotropic magnetoresistance (AMR) and tunneling magnetoresistance (TMR) technologies, has expanded its AMR magnetic sensor portfolio with the latest addition of AMR132x and AMR134x AMR switch sensor series.

The AMR132x series includes AMR1320 and AMR1321 omnipolar omnidirection magnetic switches. Unlike most magnetic switch sensors that respond to magnetic fields along a single direction, these sensors detect magnetic fields from any direction within 360°. This capability provides a cost-effective alternative to Reed switches for magnetic tamper detection in utility meters including water, gas and electricity meters, and many magnetic-activated proximity switches. AMR1320 and AMR1321 feature ultra-low power consumption at 1 to 3 microAmpere, enabling extended lifetime for battery-operated sensor applications.

Source: MDT

Designed for pneumatic cylinder position sensing, the AMR1341 and AMR1342 omnipolar magnetic switches feature accurate switching points with low hysteresis, two sensitivity settings for different magnet types and stroke lengths, and effective double-switching suppression. The 1 kHz high-speed operation, low-power consumption of 40 microAmpere, ultra-compact packages, and a wide range of supply voltage from 1.6 V to 5.0 V make them adaptable to a variety of applications.