The HiTechnic Sensor Multiplexer extends the LEGO Mindstorms NXT and adds extra functionality by allowing up to 4 sensors to be connected to one NXT sensor port. However, it does not provide any mounting holes making it difficult to mount it on a robot. One can use LEGO piece to secure the MUX main unit but there is no easy way to secure the battery box. This mount solves the problem by holding both the MUX and the battery box. It allows easy access to the battery box for replacing the battery without using any tools.