ماژول GPRS / GSM چهار باند A6 دارای ارتباط TTL / RS232

A6 MODULE Introduction :
dimensions: 22.8 × 16.8 × 2.5mm
Operating temperature: -30 ? to + 80
Operating Voltage: 3.3V-4.2V
Standby average current: 3ma
support the GSM / GPRS four bands including 850,900,1800,1900MHZ;
Sensitivity: <-105
support voice calls
support SMS text messaging
Support GPRS data traffic, the maximum data rate, download 85.6Kbps, upload 42.8Kbps
Supports standard GSM07.07,07.05 AT commands and extended commands Ai Thinker
supports two serial ports, a serial port to download an AT command port
command supports the standard AT and TCP / IP command interface
support digital audio and analog audio support for HR, FR, EFR, AMR speech coding
Support 2G 3G 4G mobile card Unicom card

Advantage A6 module:
Wide coverage: GPRS 34 provinces in the country have good coverage, is the world's prevailing 2G communication standards. Basically the phone can call places are available through GPRS wireless network;
Always online: Just activate GPRS application, it will remain online, similar to the wireless private line network services.
By the amount of the charge: GPRS services, though to be online, but you do not have to worry about the cost issue; because the traffic generated only when charging.
High-speed transmission: GPRS currently supports peak transfer rate of 85.6Kbps, the theoretical peak transfer transport up to more than 100 Kbps.
Cheap: only with respect to its series of half SIM module prices. Greatly reduced
Things barriers to entry device;
With its ultra-small size, low power consumption and wide operating temperature range, A6 is the rationale for M2M applications want solutions for automotive, industrial and PDA, personal tracking, power environmental monitoring, wireless POS, smart metering as well as of other M2M application, to provide a sound
GSM / GPRS text messaging, voice and data transmission services.

Module Pin Flag:
VCC_IN  :  Power Supply Input  5V -9V
GND: power ground
U_TXD  :  the A6  module  to send   (TTL level)
U_RXD  :  the A6  module  receives   (TTL level)
RS232_TX: 232 serial port
RS232_RX: 232  serial port to receive
HTXD: Serial Interface Upgrade
HRXD: Serial Interface Upgrade
MIC- MIC +:  microphone input
REC + REC-:  Speaker output
INT: Control module is used to enter a low-power mode, high back Out into the low
PWR: power button,> 1.9V  more than  2s  to boot
(Module hardware to do the processing, power is automatically turned on, eliminating the need for wiring trouble)
EN: MP1584  power chip enable pin, pulled enable power chip, low enabled, this pin can be used as module reset pin enable With such abnormal module is restarted.