Able to generate reference clock with <20 nsec accuracy, 12.2 x 16.0 mm NEO-M8T and 17.0 x 22.4 mm LEA-M8T offer high sensitivity (-157 dBm signal acquisition) with assisted GNSS that enables accelerated start up even inside structures with limited sky view. Reference clock is derived from multi-GNSS, including GPS, GLONASS, and BeiDou. Receiver Autonomous Integrity Monitoring and alarms, 2 configurable time-pulse outputs, as well as survey-in and single satellite timing features are standard.