Sensor has one black and one red wire, plus green ground; existing box has black wires going to two switches - one for light, one for fan - and all white wires are connected with a cap in the back of the box
SOURCE: GE digital timer. Instructions say to: 1)
Find the Hot wire:
Your switch has 2 wires. One of these wires is Hot, and one goes to load. Disconnect wires from switch. Turn on power. Do not stand on wet surface. Test each wire to bare copper wire. When tester lights up, that is Hot wire. The other wire goes to load.
Connect wires:
Hot wire goes to Black timer wire
Wire to load goes to Red timer wire
White wire connects to white wires that are twisted together
Bare copper wire connects to Green wire from timer
How to connect white wire to white wires that are twisted together.
a) Strip white timer wire so you have 1-1/2 " of bare wire. Stranded wire will wrap around other wires easily.
b) Remove wire nut. DO NOT UNTWIST wires.
c) Hold all whites together so bare copper lines up. Wrap stranded copper around the twisted wire.
d) Replace wire nut, or use larger wire nut. Twist real tight. Do not use tape. You can solder the connection.
e) When done, pull on white time wire to make sure it is held tight. Push whites back into box.
SOURCE: Timer has 4 wires Blue,
You are replacing a single-pole switch that has two wires.
You posted under UPM timer.
But UPM timers have a red wire instead of a blue wire, so you have different brand.
Some GE programmable timers and some Leviton timers have a blue wire.
Here are instructions:
-Green wire goes to bare ground wire.
-Timer black wire goes to black wire
-Timer blue wire goes to white wire.
-Located in back of electric box are white wires twisted together and covered with wire nut. These are neutral wires. Timer white wire connects to these wires. This will power electronics inside the timer.
-If your box does not have white neutral wires described above, then connect timer white wire to bare ground wire along with timer green wire.
-Turn power ON, and push on-off button. If timer works, then it is wired correctly.
- If timer doesn't work, then reverse Timer blue and Timer black wires.
- If lights blink on-and-off, then you connected white wire incorrectly, review wiring shown above.
If your box does not have neutral wires or bare ground wire as described above, then buy Walmart.s Brinks 46-1022 or Intermatic ST01C or Intermatic EJ500 or Aube T1032. These timers do not need neutral or bare ground wire.
SOURCE: I bought the above switch, and was going to
May I get the model # of the switch to help you more
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