Test and use this product, should be the following circuit connection, will be on the circuit diagram of the three elements are mounted on LED lights on the plate.
测试与使用本产品时，需将以下电路连接，将电路图上的三个元件装于LED灯板上。
On an outside phone company connection, the black and white pair may be used for low-voltage signals such as phone lights.
在外部电话公司联系，黑人和白人对可用于低压信号如电话灯。
On an outside phone company connection, the black and white pair may be used for low-voltage signals such as phone lights.
在外部电话公司联系，黑人和白人对可用于低压信号如电话灯。
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