Digitrax
LocoNet Super Throttle Simplex Radio

Works With UR91
Walthers Part # 245-DT402R, p. 351 Walthers 2011 N&Z Scale Reference
A scale, $235.00, currently in stock at Walthers

 
Features full numeric keypad, controls functions 0-28, MU operations, programming, editing and more. Works with UR91 (sold separately).