A communication interface for a sensor provided to be used in a detection device, in particular for leakage detection in an explosive atmosphere, comprising a plurality of sensors, characterized in that it comprises: - at least one means, called upstream means, configured for receiving an interrogation signal from upstream of said sensor and transporting it to the sensor by a communication port, and for receiving from said communication port a response signal and transporting it to upstream of the sensor by said one upstream means; - at least one means, called downstream means, configured for transporting an interrogation signal to the downstream of said sensor; - at least one means, called sensor short-circuit means, displaceable between an open position in which the upstream means is linked to said communication port, and a closed position in which the upstream means is disconnected from said communication port with the sensor and is connected to the downstream means; - at least one means, called control means, configured for controlling said short-circuit means, and arranged within the communication interface; configured to detect the response signal emitted by the sensor and modify the position of said short-circuit means consequently, to: - maintain said short-circuit means in the open position until the transmission of the response signal, thus allowing: ▪ in a first direction of communication, to receive the interrogation signal by said upstream means and transmit said interrogation signal to the sensor by said communication port; and ▪ in the opposite direction, to emit by the upstream means a response signal provided by the sensor by said communication port in response of said interrogation signal and, - dispose said short-circuit means in the closed position after said transmission. - at least one means, called upstream means, configured for receiving an interrogation signal from upstream of said sensor and transporting it to the sensor by a communication port, and for receiving from said communication port a response signal and transporting it to upstream of the sensor by said one upstream means; - at least one means, called downstream means, configured for transporting an interrogation signal to the downstream of said sensor; - at least one means, called sensor short-circuit means, displaceable between an open position in which the upstream means is linked to said communication port, and a closed position in which the upstream means is disconnected from said communication port with the sensor and is connected to the downstream means; - at least one means, called control means, configured for controlling said short-circuit means, and arranged within the communication interface; configured to detect the response signal emitted by the sensor and modify the position of said short-circuit means consequently, to: - maintain said short-circuit means in the open position until the transmission of the response signal, thus allowing: ▪ in a first direction of communication, to receive the interrogation signal by said upstream means and transmit said interrogation signal to the sensor by said communication port; and ▪ in the opposite direction, to emit by the upstream means a response signal provided by the sensor by said communication port in response of said interrogation signal and, ▪ in a first direction of communication, to receive the interrogation signal by said upstream means and transmit said interrogation signal to the sensor by said communication port; and ▪ in the opposite direction, to emit by the upstream means a response signal provided by the sensor by said communication port in response of said interrogation signal and, - dispose said short-circuit means in the closed position after said transmission.