Features: Flipper 0 Module Single module without Flipper 0 host. Note: module test in 3rd party firmware, recommend to use unleashes firmware With antenna integrated module, not external antenna required, defaulted rate 9600,protocol in the module and open the positioning app, wait for 5seconds for the battery to charge, then press theRESET button to start searching for star. First time searching is slow, about 30seconds, please use it outdoors in area by a window.This is a single screen app with some interaction via hardware buttons: Long press the up button to change the rate. The defaulted rate is 9600, but 4800, 19200, 38400, 57600 and 115200baud are also supported. Long press the Right button to change the speed unit from nauticaled milesper hour to kilometers per hour. Press the OK button to set the backlights to constant. Press again to disable. Specifications: Item: For Flipper 0 Module Size: about 3x2.8cm/1.18x1.1in Package Includes: 1PC For Flipper 0 Module note: Due to the problem of lighting effects and shooting there might be tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment.