What Is a GSM Modem?

Introduction to GSM-2 / 3

GSM-3 modem

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Introduction to GSM-2 / 3
GSM-2 / 3 is a GSM modem. It can send short message SMS by controlling this module. The relevant technical parameters are as follows:
Power supply: + 5 ~ 35VDC antenna interface: 50 / SMA female SIM card: 1.8 / 3V, automatic detection maximum power consumption: 2W (900MHz), 1W (1800MHz) RS-232 interface: DB15 (with adapter cable) size (Mm): 88x60x26 Weight: 100g Working environment temperature: (-20 ~ + 55) & ordm; C Storage temperature: (-25 ~ + 70) & ordm; C Relative humidity: 95% (non-condensing)

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