Replacement Keys and Key FOB for Solax Transformer and Mobie Plus. The Spare Remote Control is an intricate item designed for the Transformer exclusively. It will open and close your transformer with just the touch of a button on this sleek key chain. Opening and closing your Scooter with the latest technology has never been easier and more seamless. Features: Compatible with Transformer or Mobie Plus Scooters. Extra keys (pair) Remote FOB - 1 unit Handy Prevents getting stuck.