A transmission interface module includes a receiving unit, a transmitting unit, a multiplexer, and a processing unit. An output terminal and a control terminal of the receiving unit are electrically connected to the processing unit. The input terminal and the control terminal of the transmitting unit are electrically connected to the processing unit, and the control terminal of the multiplexer is electrically connected to the processing unit. The transmission interface module respectively adjusts a turn-on state or a turn-off state of the analog power terminal, the digital power terminal, the processing unit, the receiving unit, the transmitting unit, and the multiplexer through a plurality of operation modes to transmit the detecting signals.