Working bands

TD-SCDMA2100/1900 MHz GSM900/1800 MHz (Data only or

Telematics)

For detailed information about the working bands supported, seeOverview.

Working

temperature

Normalworking temperature: –20°C to +70°C

Extreme working temperatures: –30°C to –20°C and +70°C to+75°C

Ambient

temperature for

storage

–40°C to 85°C

Power voltage

3.3–5.5 V (3.8 V is recommended.)

AT commands

See theHUAWEI MT509 LGA Module AT Command Interface

Specification.

Applicationinterface (116-

pin LGA

UART (supporting 8-wire UART)

One standard Subscriber Identity Module (SIM) card interface (3 Vor 1.8 V)

Audio(OPTION) :

(only telematics version supports this function)

For detailed information about the working bands supported, seeOverview.

2×Micphone in/1×Handset out/1×Speaker out/1×PCM

SMS

Management of text messages: read messages, delete messages,

storage status, and message list