Hi,
to my knowledge there are only a few pendants which have a Mach4 plugin.
I use a VistaCNC pendant and it works well, its not wireless. VistaCNC is the only company to have produced a Mach4
plugin for their hardware. The plugin has its share of bugs.
XHC has a couple of pendants that work with Mach4 but XHC did not write the plugin.....that was done by an interested XHC pendant
owner. He has been deluged by requests by others to improve and expand the plugin to work with other XHC models including
the wireless one. He has got sick of it.....its not like he gets anything from it and he has a family and a job etc.
If you really want a wireless pendant the market is wide open.....make and then sell your own.
Craig