Spec：

• ● Power supply：DC-12V power is supplied from power.
• ● Power Consumption：Stand by 20mA˙Max. 68mA
• ● Material：A B S plastic
• ● Dimension：222mm ×84mm ×76mm

Function：

• ● 1.There are 8 buttons for connect with room to room, calling with room station and pick up the handset to talking.
• ● 2.There are four wires system, ( add a model, extra a wire)
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