Woods 59744 59744WD Indoor 24 HR FLIP-Switch White

Works great. Only uses two AA batteries. Programming is quick and easy compared to most timers. And best of all, there's no wiring needed! It's been running now for over 3 months. Mine runs a bit slow and loses about 2-5 sec a day (I didn't measure it), and that's OK (hint, hint: this is an area for future product improvement). This has two program capability, but I use only one. However, there's more to this story, read on...I HAD to use this to control my front porch light (next, the backyard light). Why? Because EVERY other electronic wall switch timer I have seen requires access to BOTH sides of the AC line (white and black). Why? Because those timers are all powered off the AC line (some include batteries for the clock, but still use AC for the on/off relay), and the wall switch in question only has two wires in the box which are the two black wires that break the high side of the AC line to the light socket.My older house (built circa 1915) still has some remnants of ceramic knob-and-tube wiring and the front porch switch/light is one of those. They were very conservative with wire use back then, since it was expensive (and is again, due to the high price of copper!) so it only has access to the two black AC wires as I already said. And these wires for this switch have gotten REALLY short from years of use.Even though I replaced my 16W CFL with an 6W LED a few years ago, I still wanted it to go on-off diurnally (daily) -- it's a holdover from when I first moved in 40 years ago (yeah, I know) when ONLY incandescents were available (I used 40W then 25W bulbs back then). Hey, I'm trying to be "green" (or is it my OCD?). I even tried using in-line automatic dusk-to-dawn switches, but they too won't work because my porch is too shaded by a 12' by 12' roof to work reliably.As I should be obvious by now, I was on a mission, and this switch helped me achieve my goal of having a my front porch light go on/off daily.Next: another one of these switches for the back yard light (which, although I required it completely when I remodeled the kitchen back in 1984, I too wired that conservatively and only provided the two black wires to the switch box -- darn!). Too bad this one's not as cool as some of those switches I couldn't use, especially the one that automatically adjusts for the length of the day because it has a solar calendar built in (but it was pricey).

THE GOOD: I bought three of these and they all work great. We have a lot of overhead lighting in multi-pole configurations, so it was a lot easier to stick one of these over a switch than to wire in a new switch with a builtin timer. So far, all the clocks have stayed in synch with each other, and they actuate reliably; I have yet to see a switch "get stuck" without being fully flipped. There's a dedicated button for toggling DST on/off, so you don't need to reset the time to do that.THE BAD: It doesn't work with some switches that are particularly tough to toggle. I have a few of these and had to install the timer to a different switch on the same circuit. Also, you can't put two of these side-by-side on a multi-gang plate. They're just a bit too wide to fit. There's no calendar, so it can't track sunrise/sunset, so if you use them for outdoor lighting you will have to adjust the time as the year passes.THE UGLY: Pretty inconvenient to use manually, so you really do not want to put these over a switch you flip with any regularity. Either use it for a light that you'll never control manually, or install on the switch in the corner that you never use.THE UNKNOWN: Battery life. I haven't owned them long enough to know how long the batteries will last. Hopefully, with two AA batteries, they should last a long time.

I've only had this installed for about a week but so far I love it. I wanted something to turn on my porch and patio lights when I'm not home and turn them off at daylight. Programming was easy once I thoroughly read the instructions (especially the part that tells you to cycle through to verify the programmed times once entered and ensure it is on "auto" when you're done); while programming the times, it helps to read the display to see which program you're in and if you're in the on or the off part of the program. That would seem to be obvious but it really helped me get through it more easily. I only use one of the two programs and on the unit I received, you program on and off for the first program, then on/off for the second, so I simply left the second one blank. The installation was far easier than anticipated. The 1st night was on right time for both on and off but like many others wrote, it didn't throw the switch to the full off position but far enough to turn off the porch light. I manually moved it the rest of the way that one time and since then, it has moved to the full off position by itself. I ordered just one initially to see how I liked it and liked it so well, I've ordered a second one for the patio. At this writing I'm awaiting its arrival.September 18 update.... OK, so the second one arrived and installed as easily as the first. However, the new one didn't move far enough to turn the light switch on, so I followed the directions given in one of the other reviews, using a piece of a business card(he used balsa wood I think) cut to 5mm x 10mm. Had to unscrew the back to glue it to the piece that moves the switch up/down but once I did that and closed it up again, it worked just fine. Not sure if the switches are different or if it's the device manufacturing but it's really not difficult to add that small piece to get it to move enough to throw the switch on and off. Overall, I'm still quite satisfied and am grateful to the reviewer who was kind enough to include the measurement details for the modification.