An unexpected feature is the very visible LED light on the switch that shows power is supplied to the switch when enabled.
If you need light function, using with DualSKY VR Pro or VR pro Duo.
Our customer said where it used to:
These switches work with all "failsafe" style systems. I've used them on Advanced Radio Boards, Smartfly and BoomaRC, now I'm using them on the Aura Pro's. I don't use the light function.
