sim card wifi modem
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H21 Dual SIM Card 4G WiFi Modem
4G / 3G / 2G Dual SIM + 3 GPIO 2 Ehternets(2 LAN or 1 LAN + 1 WAN) VPN(PPTP / L2TP, IPSec, GRE, OpenVPN) WiFi optional GPS optional RS232 + RS485 optional Cloud management optional
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