The invention relates to a proximity sensor (1) comprising a PCB (10) which contains the sensor electronics, a sensor element and a sensor interface. The electric connections between the PCB (10) and the sensor interface and/or the sensor element are established by means of plug-in contacts. In a preferred embodiment, contact elements (21) comprising bifurcated arms (25) and contact blades (27) are configured on the sensor housing and the PCB (10) is inserted between said bifurcated arms (25) in such a way that the contact blades (27) establish an electrical connection with contact surfaces (53) on the PCB (10).