XZBWR2STT24 Sensors. elemecanique Lesswire XZBW series wireless transmitters and receivers for use with a wide range of sensors. This range includes transmitters and receivers which communicate via 2.4 GHz radio transmission. Reduced cabling benefits applications where wiring or wire maintenance is not physically or economically possible. Equipped with a universal M12 connector input, the XZBW series is compatible with all PNP and NPN sensors and limit switches.