Spec：

• ● Power supply： input 110V output DC-12V / 1A
• ● Four connecting wires port.
• ● Material：SPCC iron（backed-painting）
• ● Dimension：156mm ×95mm ×57mm

Function：

• ● 1.＋ port：Is a DC-12V，provide the power source for talking and calling.
• ● 2.－ port：Is a DC-12V - voltage，provide the power suoure for talking and calling.
• ● 3.CM port：Provide a digital signal transmission function.
• ● 4.L1 port：Provide a talking function.
• ● 5.A power switch on the panel, “on” and “off”.
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