The TLV493D 3-axis magnetometer is a great little sensor for detecting magnets in 3D. In fact, the manufacturer Infineon suggests it could be used to make a joystick! You could also use it for other cool things like detecting objects with magnets on them, like the lid of a box, or a statue that unlocks your secret lair when placed on the mantle? The TLD493D excels at measuring nearby magnetic fields in three dimensions. It won't make a good compass, it's not sensitive enough to pick up the Earth's magnetic field, but you can use it to track the movement of nearby magnets in three dimensions.<br><br>Here are some specs: Digital output via a standard 2-wire based I2C interface at up to 1 MBit/sec 12-bit data resolution for each measured direction Linear field measurements up to +130 mT for Bx, By, and Bz Excellent matching of X/Y measurements for accurate angle sensing As we are wont to do, we placed the TLV on a breakout PCB along with the circuitry that supports it, making the TLV easy to use. The combination of a voltage regulator and logic level lation allows it to be used with a range of microcontrollers with 3.3V or 5V logic levels. We even provide a pin for you to use excess 3.3V power that the TLV493D does not require. Colour:Black Material:ABS<br><br>Package Contents: 1x TLV493D 3D Magnetometer 1x Pin<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.