Worldwide LED Fixed Wireless Alarm Terminal Quad band GSM 850 900 1800 1900MHz Arduino Supports Online Push:

SKU: 30552900557

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Live Spec

Worldwide LED Fixed Wireless Alarm Terminal Quad band GSM 850 900 1800 1900MHz Arduino Supports Online Push:Feature: 1. No need to invest in ground wire line, use GSM mobile phone SIM card, easy to install 2. Support international and domestic, local, fixed mobile voice services 3. does not change the original dial up habits, and ordinary telephone landline operating habits of the same 4. With a reverse polarity signal, you can access the meter or use the computer meter 5. Built in watchdog duty circuit, automatic detection of equipment operating status,

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