3 از 5.0 با 4 رای
چیپ GPRS / GSM چهار باند A9
Description:
A9G is a complete four-frequency GSM/GPRS module, which supports GPRS and GPS/AGPS technology, and integrates into a compact design SMD package, which greatly saves the time and cost of developing GNSS applications.
A9G can be widely used in various Internet situation, suitable for home automation, industrial control, wireless wearable electronics, wireless location-aware devices, wireless positioning system (GPS) signals, and other Internet applications, is the ideal solution for Internet applications.
Features:
Complete quad-band GSM/GPRS module, 800/900/1800/1900MHz.
Support GSM/GPRS(A9), GPRS+GPS+BDS(A9G)
SMD package is adapted to facilitate the mass production test.
The sleep current is less than 2mA.
Support GPS, BDS(beidou) positioning (A9G only)
Supports digital audio and analog audio, supports HR, FR, EFR, AMR voice coding.
Support voice calls and SMS messages.
Embedded network service protocol stack.
Support standard GSM07.07, 07.05 AT instruction and extensible instruction set.
Support USSD and PBCCH.
Support UART interface download.