Sensor for detecting the surroundings

A sensor (5) for detecting the surroundings (2), the sensor comprising:

• a signal exchange unit (51),
• a power supply (52),
• a sensor housing (53),
• a transmitter (54), and
• a receiver (55),
• wherein the transmitter (54) and the receiver (55) are arranged in the sensor housing (53),
• wherein the transmitter (54) is designed to emit a measuring radiation (56) into the surroundings (2),
• wherein the receiver (55) is designed to receive reflected radiation (57) from the surroundings (2),
• wherein the power supply (52) is arranged to supply the transmitter (54) and the receiver (55) with power,
• wherein the signal exchange unit (51) is connected to the receiver (55) and the transmitter (54) for signal exchange,
• wherein the signal exchange unit (51) is set up to exchange signals with a counter-signal exchange unit (51), and
• the sensor housing (53) can be mechanically connected to a receiving unit (4) in a non-destructive, tool-free, and detachable manner.