1.1 Product Description
The GR-504GG is a stand-alone RS232 interface GNSS receiver, featuring the high performance MediaTek positioning engine. It is flexible and cost effective receiver offers numerous connectivity options in a miniature enclosure 36.3x36.4x13.5 mm. The GR-504GG is IP67 waterproof and can survive wet outdoor environments.
Through the feature of 66-channel, the GR-504GG boasts a hot start in less than 1 second. Innovative design and technology suppresses jamming sources and mitigates multipath effects, assisting GR-504GG GNSS receivers excellent navigation performance even in the most challenging environment.

Applications
 Automotive Navigation
 Personal Positioning
 Fleet Management
 Marine Navigation
1.2 Product Features
 IP67 Waterproof Rating
 Low Power Consumption: Max 45mA@3.3V
 Ultra High Track Sensitivity: -165dBm
 Built in High Gain LNA
 Blue LED Indicating Light for GPS Status
 The built-in Super Capacitor for Backup Ephemeris
 Extremely Fast TTFF at Low Signal Level
 Communication Type: RS232
 NMEA-0183 Compliant Protocol or Custom Protocol
 RoHS Compliant