详询郭或
Working bands

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

ematics）

For detailed information about the working bands supported, seeOverview.

Working

temperature

Normal working 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 the HUAWEI 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 ematics 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 mess