Get the Kadee Permanent Magnet Delayed Uncoupler in Code 100 for HO Scale (Part # 380 - 321). It's a super - handy 'delayed - action' uncoupler. You can place it anywhere on a straight track segment between the rails. Comes with one pair and instructions. Track isn't included. It's ready to mount on top of ties with Code 100 rail. If you're using Code 83, 70, 55 or 40 rail, just cut out the ties.

Using this Kadee uncoupler is easy. First, find a straight part of the track where you want to place it. It can go right between the rails. The package comes with one pair of uncouplers and clear instructions to help you out. Remember, the track isn't included. If you have Code 100 rail, you can directly mount the uncoupler on top of the ties. But if you're using Code 83, 70, 55, or 40 rail, you'll need to cut out the ties before mounting. As for maintenance, keep it clean from dust and debris. You can use a soft brush to gently clean it every once in a while. And store it in a dry place when not in use to avoid any rust or damage.