The surface mounted sensor has a good apearance and operates as expected however the design needs some improvement: There is insufficient space for the fixed wiring through the small channel provided on one side. The terminal block could be fixed to prevent dispalcement during the installation. There is insifficient space for even the shortest length od spare cable when the cables enter the device from the side.

The fixing holes could be made to accept a variety of fixings other than those provided wihich are not always suitable.