Delin Comm DM2525-B is a complete GNSS module. The module can simultaneously acquire and track multiple satellite constellations that include GPS, BEIDOU, GALILEO, QZSS and SBAS.It features low power and small form factor. Besides, it with superior and performance even in urban canyon and dense foliage environment.
This module supports hybrid ephemeris prediction to achieve faster cold start. One is self-generated ephemeris prediction (called EASY) that is no need of both network assistance and host CPU's intervention.This is valid for up to 3 days and updates automatically from time to time when GNSS module is powered on and satellites are available. The other is server-generated ephemeris prediction (called EPO) that gets from an internet server. This is valid for up to 14 days. Both ephemeris predictions are stored in the on-board flash memory and perform a cold start time less than 15 seconds. 

1. Build on high performance, low-power  MediaTek AG3331 chip set
2. Ultra high sensitivity: -165dBm
3. Extremely fast TTFF at low signal level
4. Built in high gain LNA
5. Low power consumption:Max42mA@3.3V
6. NMEA-0183 compliant protocol
7. Operating voltage: 3.0V-5.0V
8. Operating temperature range:-40to85ºC
9. Patch Antenna Size: 25x25x4mm
10. Module Size: 25.5x25.5x8.8mm
11. Communication type: UART/TTL
12. RoHS compliant (Lead-free)
13. IATF16949 quality control
14. 
     

Parameter	Specification
Power Supply	Supply voltage:  3.0V~5.0V  Typical: 3.3V
Power Consumption	Acquisition:  42mA @VCC=VBAT=3.3V Tracking:  38mA @VCC=VBAT=3.3V Backup:  20uA @VBAT=3.3V
Receiver Type	Code 66 search channels ,22 synchronous tracking channels GPS&QZSS L1 1575.42MHz C/A , Beidou B1 1561.098MHz      SBAS: WAAS, EGNOS, MSAS, GAGAN
Sensitivity	Tracking:   -165dBm Re-acquisition:   -156dBm Acquisition:   -147dBm
TTFF (Autonomous)	Cold start:   35s  typ @-130dBm Warm start:   30s  typ @-130dBm Hot start:   1s   typ @-130dBm
Horizontal Position Accuracy (Autonomous)	<2.5m CEP @-130 dBm
Update Rate	1Hz
Accuracy of 1PPS Signal	not enabled
Acceleration Accuracy	Without aid: 0.1m/s²
Dynamic Performance	Maximum altitude:  18,000m Maximum velocity:  515m/s Acceleration:  4G
UART Port	UART Port: TXD and RXD Supports baud rate from 4800bps to 115200bps, 9600bps by default UART port for NMEA output, binary or GK proper Agreement input
Temperature Range	Normal operation:  -40°C ~ +85°C Storage temperature:  -45°C ~ +125°C
Physical Characteristics	Size:  25.5±0.50 ×25.5±0.50 ×8.8±0.20mm Weight:  Approx. 7.5g