My apologies magicmagni, if this is a hi-jack. I'm sure you do not want this to turn into an X10 thread! But before everyone gets too excited, I need to add in a few caveats about using X10 for scheduling events.
1) You have to be able to accept failure
- X10 signals are sent through your house electrical wiring. There can be interference (there are ways to mitigate this), signal degradation, or even power failure that causes an event signal to not be received by the X10 module. For example, it you turn a light on, and then lose power 8 hours later when the "turn light off" signal was supposed to be sent, when the power comes back the light will just remain on until the next scheduled "light off" signal.
2) You have to prepare for spurious signals
- X10 rarely has a false alarm, but power surges and/or someone turning on/off the controlled device will trigger a "Turn on" signal for that device. For example, a light could be properly turned off by the X10 module (the light itself is switched on, but the in-line X10 module is letting no power through). But you flip the light switch off than on and the X10 module will actually turn the light on (thinking you wanted it on)! This can also be caused by a power surge.
This only happens to X10 modules with "local control" logic, like the Radio Shack modules. You can buy different modules, or disable it (as I do) using these instructions
X10 is nice, but it's not perfect. I have autodosing, but I do not control it with X10 modules at the moment, because I cannot afford the possibility of losing power during dosing and the "dosing off" signal not happening and over dosing the tank when power returns. I haven't tested that yet.
Technically the control module I pointed out in my prior post has battery backup. So it should be able to turn X10 modules off when you have a power failure. I just haven't shut the power off at my house's fuse box to test it.
So maybe should not have brought it up in a dosing thread. Sorry. I was inappropriately responding to the "needing a lot of timers" comments. It is not appropriate for dosing timers IMO. A temporary power outage causing your lights to stay on all day is one thing, dosing for 24 hours is something else entirely.