Another forum member and I were at a mutual friend's layout yesterday when there was occasion to use the kill-power feature of the digital control: the loco on one train and caboose on another contested space. while what happened was bad enough, it could have been messier had power not been cut instantly. That led to a good discussion about the relative merits of "kill switches" . . .
There are many goods methods to build or buy this capability for a layout, but I remain convinced that the most effective easy way is that pictured in the photo and video below. I use the Woods Wireless Outdoor Remote power switch shown in the photos and video below, that cost all of $15 on Amazon. It works well but I'm not reocmmending it as much as anything like it - no doubt there are many others of the same type.
Regardless, what I particularly like is:
- It was quick: literally, half a minute to install: I plugged in the big unit to the wall outlet, plugged the main power lead from the layout into the top of that unit, pulled a small plastic tab out of the power supplies battery door, activating the remote's battery - and that was it - done!. Being inherently lazy in a way - I hate doing work that gets in the way of fun project work - this was very important to me.
- It controls all power to the layout. The line I plugged is from my multi-outlet surge suppressor which feeds a ZW-L and two CW-80s that power my three train loops and all the accessories, and also six Bachman or Lifelike RTR HO set supplies along with one Tekpower 50W pure DC supply that power my different 'Streets loops and my downtown LED building variable-intensity lighting.
- The remote works through walls and from at least 70 feet away - even from outside the house. I can be anywhere and use it.
- It has separate on and off buttons, not just a single on-off button: this is important. It means if I don't know if the power is on or off - maybe I am in the workshop and not sure I turned things off - I and can turn the power on or off as I want for sure by pushing the on or the off button as I want.
- By using it, when I power up again all the throttles and such are set just where they were.
I typically set three trains and six or more 'Streets trucks or cars running anytime I am in the trainroom or my workshop. I keep the remote near me, even at times on a string around my neck. I've rarely use it, but when I need it I'm glad I have it.
The only thing to make sure of is that I don't misplace the remote: then I can't power up anything on the layout!
In this short video, three trains, all the accessories, and six streets loops are running. I turn all off, then back on, then off.