Screw the switch to the box with the provided screws. If the box is metal, be sure any exposed switch terminals are not touching the box. Push the timer switch into the box so the flanges on the switch are flush with the wall and aligned with the screw holes in the electrical box. Attach Timer Switch: Arrange the wires so they fit in the electrical box.If your house doesn’t have a ground wire, follow the instructions to properly ground the switch. The wires may attach directly to the switch with screws or the switch may have short pigtail wires that are joined to the existing wiring using wire nuts (wrap wires together and turn wire nuts clockwise to tighten). If the ends on the wires are worn, cut them off and strip them the insulation of the ends for a fresh connection. Attach Timer Switch Wires: Attach the electrical wires to the timer switch, following the instructions and wiring diagram that came with it.Remove Switch Wires: Disconnect the electrical wires from the old switch and remove it.The new switch should have instructions for different types and ages of wiring systems. The timer wiring should be similar to your old switch, but the wires aren’t always an exact match, and it can be easy to get confused once everything is disconnected. Inspect Wiring: Before disconnecting the old switch, compare the wiring with the instructions for your new switch.Unscrew Existing Switch: Remove the screws holding the existing switch in the box, and pull it out, leaving the wires attached. Remove Switch Cover Plate: Remove the cover plate and use an electrical tester to verify that the power is off.Turn Off Power: Turn off the circuit breaker or unscrew the fuse that controls the wall switch and fixture.A 15-amp timer will replace most standard light switches. Choose Proper Switch: Make sure the timer is rated for the same amperage as your existing wiring.How to Install a Programmable In-Wall Timer Turn off power at circuit breaker They come with a cover plate but will also accept standard square cover plates. Standard Size: In-wall timers fit inside a regular wall switch box.Backup Battery: The integrated NiCd rechargeable battery prevents your settings from being erased during a power outage.Manual Override: Need more light? You can override the settings with the touch of a finger, and it’ll return to the program in the next cycle.Many also have a “random” setting to provide irregular security lighting when you’re away on vacation. Fully Programmable: Using the 7-day program cycle allows you to set the timer according to your schedule.Save Energy: By programming the timer to come on only when needed, you can save energy without having to think or worry about it.Automate Functions: In-wall timers can automate lights, fans, pumps, or anything else that can be controlled by a regular light switch.
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