I do have a manual, but not sure I can distribute it, as it might be beta...
I'm guessing you want to know the current capability, so I provide this quote: (highlighting mine)
Congratulations on your purchase of the Crest HO Revolution Train Engineer wireless control system. This product has been manufactured to the highest standards using only quality components and, with proper care, will provide you with reliable service. The Revolution TE operates on the 2.4Ghz frequency band for ultimate stability and interference free operation. The Revolution TE lets you walk around your model railroad layout and remotely control your locomotive speed, direction, lights, sounds, and smoke from up to 200 feet away. The Revolution TE was developed to provide the model train enthusiast with complete integrated control of their dream layout, without the need for complicated layout wiring or complex control panels. The Revolution TE receiver is designed to operate between 8 to 18 volts 1.5 amps with pure DC, DCC track power or battery power. The Receiver is designed for “plug and play” installation in any Locomotive with an NMRA port. The receiver can also be installed in any Non-Plug-N-Play locomotive.