Hobbypower APM2.8 APM V2.8 Mega Flight Controller & CRIUS NEO-7M GPS Module for Multicopter APM2.8 FC with Shock Absorber NEO-7M GPS module ,This is the high performance GPS module with HMC5883L compass. It can be mounted away from sources of interference. It features active circuitry for the ceramic patch antenna, rechargeable backup Capacitors for warm starts.