We offer a completely wireless doorbell with a Contemporary Style bell push button for the Grothe Mistral range, and these are shown below. The wireless extender required to send the wireless signal is incorporated within the perspex plinth and is internally linked by a small length of cable to the wired contemporary style bell push button screwed to the plinth. Just connect the plinth to the wall and you have a purely wireless bell push (no cabling to the inside). The plinths are 5mm thick perspex and come in white or black and include 76mm 80mm or 63mm bell pushes. Select the plug-in chime model 400E or battery chime unit model 600E as separate items to link to the bell pushes