Features 

1. Build on high performance, low-power MediaTek MT3337 chip set
2. Ultra high Track sensitivity: -165dBm
3. Extremely fast TTFF at low signal level
4. Built in high gain LNA
5. Low power consumption: Max 28mA@3.3V
6. NMEA-0183 compliant protocol or custom protocol
7. Operating voltage: 3.0V to 5.0V
8. Operating temperature range:-40to85ºC
9. Patch Antenna Size: 18.4x18.4x4mm
10. Module Size: 22.1x22.1x8.6mm
11. Communication type: UART/TTL
12. RoHS compliant (Lead-free)
13. IATF16949 quality control

1. Power Supply 
2. Regulated power for the DM2222-R is required. The VCC Pin Need a stable DC voltage supply. Power supply ripple must be less than 30mV. The input voltage Vcc should be 3.0V~5.0V, Recommended power supply voltage is 3.3V . maximum current is 28mA. Suitable decoupling must be provided by external decoupling circuitry.

1. UART Ports

1.  The module supports two full duplex serial channels UART. All serial connections are at 3V CMOS logic levels, if need different voltage levels, use appropriate level shifters. The baud rate of both serial ports are fully programmable, the data format is however fixed: X, N, 8, 1, i.e. X baud rate, no parity, eight data bits and one stop bit, no other data formats are supported, LSB is sent first. The modules default baud rate is set up 9600bps, however, the user can change the default baud rate to any value from 4800 bps to 115kbps. UART port can be used for firmware upgrade, NMEA output and PMTK proprietary commands input.