YuHan Power Supply Control for Door Access Entry System AC 110-240V to DC 12V 5A Worldwide Voltage

Muy sofisticado

Works as it should

Muy buena calidad.. Excelente

Using this to power and switch a 12vdc lamp when a door contact is made. Saves a lot compared to a power supply and relay. Wish it was listed by a testing authority. Local city is very strict.

I have used a few of these , one of which spiked and blew , That being said it was a big surge . I will still continue using these but maybe fit an anti surge . Excellent value and features

I had the unit without battery back-up that worked 100% until power goes out. I purchased this one because of the battery backup. Unfortunately it cycles on/off 24-7. It's literally the worst option for a door lock power/control. I had to reinstall the old one and it is back to keeping the door locked.

Worked as expected. Note that the box is just big enough to fit a battery.

So far so good with the AC power connection, it’s powering my lock just fine - however, the “UPS” function of it leaves a lot to be desired, it has no buzzer to tell you that AC is disconnected, and it seems to have trouble reliably switching to battery, sometimes it will, other times it will just turn off as if there is no battery connected - not good! I have a good 12V battery in there, it reads 13.2V when the unit is on battery power, so there should not be any issues… yet sometimes it just does not switch, requiring you to open it and hit the “start” button to make it use the battery. Now i will have to either find another power supply or use a normal UPS on this, which is wasteful converting the 12V battery inside the UPS to 120, then back down to 12V in this unit.