ITEM NAME:GY-273 HMC5883L 3-Axis Magnetic Electronic Compass 3-5V Blue D6J7 GY-273 HMC5883L 3-Axis Magnetic Electronic Compass 3-5V Blue D6J7 Product Name : 3-Axis Magnetic Electronic Compass Model : GY-273 Chipset : HMC5883L Power Supply : 3-5V Pin Pitch : 2.54mm PCB Board Size : 18 x 14 x 2.8mm/0.71" x 0.55" x 0.11"(L*W*T) Material : PCB, Iron, Plastic Main Color : Blue Weight : 2g Great for your DIY project. Communication: IIC communication protocol Measuring range: +/-1.3-8 Gaussian. Package Content : 1 x GY-273 HMC5883L Module 1 x 5 Pin 2.54mm Pitch Header Note:Light shooting 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.