Paddle valve switch with 1/4" barb fittings, just run one line from your air tank and the other line to your bags. These can mount anywhere, they easily push and snap in with two tabs to remove.
No electrical hookup needed.
Save tons of money by not having to buy solenoids.
2 paddles needed for a front/back system or use 4 for a 4 path.
Each Paddle does up and down.