GSM Fixed Terminal, Fixed Terminal with LED Display, Terminal Caller for Telephone Landline Alarm Recording Box

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【 TERMINAL GSM 】This GSM caller has strong receiving ability, clear and stable voice quality. It uses GSM 3G, WCDMA 4G LTE network to run and can use the GSM network to quickly provide fixed telephone communication services and data services within the coverage of the GSM cellular network. 【REERSE POLARITY 】This terminal dialer has a reverse polarity , you can access the meter or use the computer meter. It built in watchdog duty circuit, automatic detection of equipment operating status, automatic restart failure. Standard communication oltage, can be connected with the user switch (PABX). 【HIGH PERFORMANCE】It supports international and domestic, local, fixed/mobile voice services, you can make local, domestic and international calls with this terminal by connecting it with a common wired landline phone and standard SIM card, you can make local, domestic and international calls. LED light display can show value and call status clearly, very convenient to use. 【WIDELY USED】No need to invest in ground wire line, use GSM mobile phone SIM card, easy to install, won't take too much time. It can be widely used in remote villages, mountainous areas, houses with weak , public telephone shops, offices, telephone sales, ships, trains and other mobile places. 【QUALITY ASSURANCE】We are very confident in the quality of this access cellular termination equipment, and provide 12 months or refund for it. Please feel to us if you have any questions about your purchase. We will solve your problem within 24 hours.