Baomain CN101A Programmable Timer Relay, 12V DC/AC Input, 200-250V 16A Output, LCD Display, Daily/Weekly

I bought this to use with my 12V garden drip system. I set up the time and watering schedule in seconds out of the box, I thought this was completely intuitive and didn't even look at the instructions. Next: wiring. I looked at the back of the time, saw some "+" and "-" and thought I had it figured out...connected it up to my pump and battery and nothing. Red light came on when I pressed manual, so I knew it wasn't broken. Figured the amperage rating was off and it wouldn't work for me after all (I need 15A to start the pump). Not too concerned since this thing is so inexpensive, I'll just look for something else. But first I double checked the specs and then saw the info in the Q&A and realized I did not do the wiring correct. Not even close. Next time my electrician comes over I will ask him WHY I had to wire it like the Q&A suggests, but for now, I watched the video in these reviews by the guy who shows you how to wire it to use for a lamp or whatever and now I have a working timer. I guess I am not as smart as I thought I was, but grateful to the folks who shared the correct wiring here.

Works great, easy to program

I’ve used these timers for years and I have purchased at least 10 of them. Recently I received one and had to return it. The replacement was fine. Today I just received one with the same problem. The display is blank which tells me the internal battery might be dead. However, I have had a timer’s battery go dead and it still worked but lost its programming if power is disconnected. The faulty ones I have received both had blank displays and they stayed blank even after connecting them to power. If you get one and the display is blank right out of the box send it back.

Great little timer for the price. Doesn't require a battery replacement. Easy to program. The MANUAL button takes a few seconds to operate. "Type A" wiring connection works well for 12V setups. 15 different weekday selections and many ON/OFF settings. Compact size and wall mountable. NOT weatherproof. Will require a weather box.

The first one of these I received was dead on arrival. The timer appears to work and the status light turns on when the relay should be on but the switch never closes. There is a soft clicking noise when the relay switches so you can hear it doing _something_ but to no effect. The replacement sent works properly with a sharper, more typical sound when the relay engages.

I got this based off of a YouTube video about automatic chicken coop doors and a 12v actuator. It works perfectly and I have it wired to an outlet not a battery. His video was very helpful and spot on. This keep military time though just remember that. That's not a big deal though.

So far this little thing is pretty cool. Bought for an RV to control a cigarette lighter outlet for an electric cooler I have. As I don't want it on all the time only when the solar is working during the day and it gets warmer. Yet can still turn it on at night for a little, though it's not necessarily needed. Cool thing is you could opt to switch to 120AC which my regular refrigerator runs on.Plenty of programmable modes to turn off and on to your hearts content.Only downside is aesthetics. Found a way to kind of flush mount it so no wires are showing, but there is no template and the screw holes aren't really friendly with that.

I had a larger version of this from years ago, and this one was about 2/3rd the dimensions of the old one so I was a bit apprehensive on the performance. However, it performs quite well and is easy to program after you fiddle around with it. There is a display that shows the current time and date, as well as whether it is on Auto or Manual Off/On. The bottom buttons are there just to program the time. To start, I first pressed the recessed "C" button to reset the parameters. Then, you hold the clock button AND press the D+/H+/M+ button to set the clock time. Press the clock button to finalize. Then for the program, you push and release the "P" button, which brings you to the "On-1" screen for the on time of program #1. You do the same thing and set the dates and the single time you want this timer to be on, then press "P" again to switch to the "Off-1" screen. Repeat the process to setup a stop time for program 1. You need to do this within 20 seconds of your last button push or it defaults to the clock screen and you have to return to that programming screen you were on. You can do several programs at once, but I only needed 1. The manual button can switch between a On mode, off mode, and Auto mode with a single press each time. It is indicated by the lightbulb symbol on the screen. When the relay is on, you will hear a click as it turns on and the top left besides the manual button will light up. You can also completely shut off the timer by holding the manual button for 5 seconds.The wiring is simple, with just a 12V power source to power the timer and another set of nodes for the relay wire. You want some female spade connectors and a crimper to wire this. The relay states it supposedly can handle up to 16A and 250 VAC of power through it. It mostly just closes a loop so you can actually run really low amounts of current through it too. The 16A is the main guideline maximum, so even if you relay 12V, I think you should keep it to 16A. This timer also runs off a CR2032 battery to maintain the clock even without a power source. I'm not sure how long this battery will last though and whether it will take power from the 12V source rather than the battery when it is running. The timer screen was already running when I got it and I don't know how long it's been. The seller could've shut it off with the manual button to save power. I think the top of the timer could pop off and you can possibly replace the CR2032 battery but I'm not sure as I haven't tried. That's my main concern is that the clock possibly relies entirely on the CR2032 battery and not the 12V power source.