Here is what Izzy and I use. It is only available at servocity. It has built in solder points for limmit switches to limit travel in both directions. These have been very reliable and have not had one fail yet, very happy with them.
https://www.servocity.com/html/elect...lled_dual.html
Supply Voltage: 3.8-5.5 VDC
Supply Current: 20ma static, 75ma energized
Load Rating: 0-30 VDC at 12.0A
Switching Time: 7.0 milliseconds
Switch Resistance: .012 ohms
Dimensions: 1.85”x2.70”x1.10”
Weight: 1.4oz