KATSU Automatic Water Pump Pressure Control Switch 220V Adjustable Electronic Intelligent Pressure Controller, for Water Booster Pump, Air Pump, Water Oil Compressor 151025

I tried the older model of this first but it didn't work for me it was faulty, so I sent it back and bought this one. Works like a charm exactly the same set up. I use it on my transfer pump to my hose pipe. It activated when I squeeze the trigger. Stops when I don't. No problem starting when it's 0 bars. I was worried about that. The run dry protection is none existent but I know when my barrel is empty cos nothing is coming out of the hose in my hand anymore. Then I have to turn the pump off manually. This might be a fault with mine but it's no problem. Once I fill the barrel back up and switch on it works again like a charm switching the pump off when it reaches desired pressure. Turns on when it drops.Quick note it's a G1/4 not NPT. Hopefully they've updated this in their description. I got a 1/4 BSP to hose barb tail 12mm adapter from Ebay to use with my hose pipe and put a quick connector on it. Used plumbers tape but so no leaks. Might not have been necessary but I had it next to me so thought why not.So there we go, hoping it lasts at least a year.

Worked good for a few days and then it just went AWOL. Stopped working with display going all over the place and would not respond to any input. Turned off for five minutes then worked for one cycle but then AWOL again. Condensation inside display window might have something to do with it.

This was very easy to set up and has worked perfectly controlling the pump on my water recovery system. Turning the pump on and off as I use the trigger on my hosepipe to water the garden.