SK 256 Ports SMS Modem Pool Support Insert 256 Big SIM Cards. It Has 8 Channels, Each Channels Can be Inserted 32 Big SIM Cards.
Input voltage 220 V AC single-phase voltage range: 176 V AC to 290 V AC Input voltage frequency 45 Hz to 65 Hz Output voltage Voltage range: -42 V DC to -58 V DC Output current 30 A for the 220 V AC single-phase input power Surge protection capability 2 kV in differential mode 4 kV in common mode
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