The main thing here is for everyone who's interested in a remote unit is the ease of putting them together. Soldered connections and dielectric grease will solve alot of issue down the road.
Also,..these solenoids are electrically operated by a coil,..and a coil has no definite positive or negative,..so either wire can be used on either side. The RS101 remote comes with very easy to follow instructions.
After adding hose barbs solenoid you can easily wire the unit up. These particular solenoids are directional,.and there is an arrow indicating the flow.
The remote receiver has a positive and negative IN from the battery,..and (2) wires OUT to the solenoid,.which can be wired either way,.. as mentioned above.
You now have a working remote. Install it however you like,..but these plastic ammo cans are water tight and easy to work with,..and $5.00 at Walmart.
Keep in mind,.the remote works very well,..but when inside a plastic box,.the (Blue) antenna wire on the receiver needs to be put through the box,..otherwise the plastic acts as an insulator and effects the range. But when it's placed outside the box,.. the range is excellent and as far as you'll ever need.
Jeff