Bachmann Industries
E-Z Command(R) Dynamis(R) Wireless Digital Command Control System

Handset
Walthers Part # 160-36507, p. 800 Walthers 2012 HO Scale Reference
HO scale, $170.00, currently in stock at Walthers

 
Wireless handset for use with Dynamis Pro systems. A total of 4 wireless Dynamis handsets can be used with the Dynamis Pro system.