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Working bands
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TD-SCDMA2100/1900 MHz GSM900/1800 MHz (Data onlyor
Telematics)
For detailed information about the working bandssupported, seeOverview.
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Working
temperature
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Normalworking temperature: –20°C to +70°C
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Extreme working temperatures: –30°C to –20°C and+70°C to+75°C
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Ambient
temperature for
storage
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–40°C to 85°C
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Power voltage
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3.3–5.5 V (3.8 V is recommended.)
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AT commands
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See theHUAWEI MT509 LGA Module AT CommandInterface
Specification.
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Applicationinterface (116-
pin LGA
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UART (supporting 8-wire UART)
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One standard Subscriber Identity Module (SIM) cardinterface (3 Vor 1.8 V)
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Audio(OPTION) :
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(only telematics version supports thisfunction)
For detailed information about the working bandssupported, seeOverview.
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2×Micphone in/1×Handset out/1×Speaker out/1×PCM
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SMS
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Management of text messages: read messages, deletmessages,
storage status, and message list
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