-------UPDATE STOK= 12----- Model GY-273 Quantity 1 Color Blue Material CCL Specification Chipset: HMC5883L; Power supply: 3~5V; Communication mode: IIC protocol; Measuring range: 1.3-8 gauss Features Triple Axis Magnetometer Digital Compass Sensor Module Application Triple Axis Magnetometer Digital Compass Sensor Module English Manual/Spec No Packing List 1 x Sensor Module Dimensions: 0.75 in x 0.55 in x 0.12 in (1.9 cm x 1.4 cm x 0.3 cm) Weight: 0.18 oz (5 g) https://github.com/sleemanj/HMC5883L_Simple Datasheet : http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Sensors/Magneto/HMC5883L-FDS.pdf