Is it possible to hook this up to a non MTH power supply? I wanted to add one to my layout so the kids could operate the 1 or MTH engines I plan on getting. I'm using conventional ZW/KW/RW for power.
From what I can see, I think the answer is no, but just wanted to double check 
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Sure. An even easier way to use it is to simply connect it to the track and connect the transformer directly to the track. This is called passive mode, and the transformer doesn't run through the little box at all. This works like a champ, and is my preferred method of connecting these.
Oh thats cool! I didn't see it mentioned in the instructions. So You just hook it to the track & don't even power it, if I understand you?
"...just hook it to the track & don't even power it,..."
The infrared eye will get it's power from the track "passively" and of course the remote uses batteries. So you've got it! Have fun!!
You got it Chris, it's really that simple. I don't know why they don't have that in the instructions, but it works great.
John,
I don't know why they don't have that in the instructions
That's why it's on page 203 of The DCS O Gauge Companion 2nd Edition:
Connecting the DCS Remote Commander Receiver in Passive Mode
The DCS Remote Commander Receiver may be connected to a layout in Passive mode of operation, in the same manner as may a TIU.
Under passive mode, the DCS Remote Commander Receiver obtains its power from the tracks and a power transformer power source may not be connected to the DCS Remote Commander Receiver's Power connector. This allows the operator to control a PS2 engine using the DCS Remote Commander Receiver while, at the same time, using the layout's existing transformer controls to operate conventional engines.
For a complete understanding of Passive mode of operation, refer to Part V - Advanced Features and Functions, 10. Passive TIU Mode of Operation earlier in this book. While reviewing that section, consider the DCS Remote Commander receiver to be the equivalent of a TIU channel.
There's a moregeneral, in-depth discussion of Passive mode on pages 116-117, as well.
This and a whole lot more is all in MTH’s “The DCS O Gauge Companion 2nd Edition", available for purchase as an eBook or a printed book at MTH's web store!
Sure, but that's not the manual that comes with the DCS-RC. 
John,
Sure, but that's not the manual that comes with the DCS-RC.
No kididing, Captain Obvious.
Barry, you just have to refer to my original statement.
I don't know why they don't have that in the instructions, but it works great.
I know the information is available, but it should be included with the product.
Connect the red banana to the center-rail and black banana to the outer rail.
If you do it in reverse the green LED on the receiver will turn on and flash on each remote command, but you won't be able to command the engine.
As GRJ points out, "passive mode" is not in the manual, so to be clear you are connecting the powered track to the banana jack side...not the coax/barrel side. If you connect via the coax/barrel side, again the green LED on the receiver will turn on and flash on each remote command, but you'll get drastically reduced reliability of commands reaching the engine.
Stan, thanks for adding that. I should have been clearer with my description.
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