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At my home I have this timer and I am not sure how to use it. Model seems to be TM8IM-24. I have found a company that sells it but cannot find instructions.

Does anyone knows how to use it or where I can find instructions?

TM8IM-24 Timer Lateral view

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You might try contacting the manufacturer, as it appears their website is down (under construction). –  Tester101 Dec 5 '12 at 15:10
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Do the tabs pull off, or do they work like a switch? If they work like a switch, usually pushed out is off, pushed in is on. If the pull off and are all identical, every tab changes the state: on-off-on-off, etc. –  Steven Dec 5 '12 at 19:12

1 Answer 1

It looks like you pull the red tabs in or out to have the device turn on or off for a given 15 minute interval. I'm guessing the black arrow is pointing to the current time. The switch on the side is to manually turn it on or off (or perhaps permanently off or on the timer). You'll just need to test it to see if the tabs being in or out correspond to on vs off. And to know about the switch on the side, try turning it off and see if the timer moves after 30 minutes.

To adjust the current time, you can turn the dial clockwise, but not counter clockwise.

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Thanks. My main doubt is if I have to put the red tabs in or out. The lateral switch has three positions. I guess they are alwasy ON, ON depending on tabs and OFF –  cad Dec 5 '12 at 7:38
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@cad, I think you have the side switch properly identified. For the tabs, you'll just have to test them. From the current settings of the tabs, that doesn't look like it's used for lighting. Is it hooked up to a water pump for a pool or pond? –  BMitch Dec 5 '12 at 11:51
    
It is used for water heater, so testing is hard as if I have hot water maybe because is being heated now or it has been recently. But you gave me an idea as I will try a multimeter in heater to see when I have current and when not... –  cad Dec 5 '12 at 12:02
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@cad, A water heater? Wow, that's different. If you have the DIY bug, I'd suggest getting a non-contact voltage tester, which is much safer for working around potentially live wiring. –  BMitch Dec 5 '12 at 12:06

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