SONOFF RM433 BASE
As SONOFF discontinue 86 Type Switches this is a replacement which can be connected through 433Mhz with all RF enable switches. This option is very ideal to replace stair-core bridge connection so common in Ireland or UK. Just use one of the T1 switches (link below) on the main wall switch and you can install second one on the other side of the stairs.
The set includes:
• RF switch
• Double side stickers
Battery CR2032 or mounting bolts (if needed) are not included