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Your cart is empty.The AC Current Switch (SW100) can be used to switch on and off remote devices with an amp draw up to 2.5 amps, (e.g. a Suncourt Centrax Centrifugal Fan). The AC Current Switch (SW100) will provide power to a remote device when the white (neutral) wire from a triggering device (e.g. a clothes dryer) carrying 1.2 – 40 amps passes through the center of the AC Current Switch (SW100).
WIguy
2025-08-17 10:30:01
Used to control my dryer booster fan. Booster turns on as soon as my dryer starts its cycle and automatically stops when the dryer is finished. Easy to install, been running strong for about a year.
Wei Kwong
2025-07-30 11:25:54
Works good for my dryer fan
General Turgidson
2025-07-28 09:36:58
This is packaged with a dryer vent booster fan. I found the items listed separately, and it was substantially less than the kit with them together. The switch works well, but there are 3 different versions of instructions. You must split up your dryer's 220 line and run only one of the 110 lines through this. It will not read 220, because the two lines cancel each other's fields. You should also know how your dryer is wired. Some use 110 from one of the lines for the blower and drum, and 220 for heat. For those, you need to pick the one feeding the blower, unless you want the booster fan to come on in concert with the heat cycle.
Fred Adrian
2025-07-23 15:34:02
bought it in may of 2019.I own a Massage and Skin Care spa, We are very busy my dryer runs 10 hours a day and I use this switch to operate A booster fan for the dryer. works 10 hours a day no problems.
MICHAEL C LEONARD
2025-07-15 18:56:41
I was annoyed that my pressure switching fans were turning on intermittently during windy days. After a couple of different locations for the pressure port were unsuccessful I decided to go a different rout. So I removed the pressure switches and installed this switch. I installed this in the basement sub panel. I just ran the neutral (white) wire from the dryer circuit through the switch, then ran a new 15a circuit for the fans. I have a fairly long run so I decided to install two Fantech fans. The switch works perfectly! My first load of jeans and towels dried in 12 minutes.UPDATE: After working flawlessly for about two months my fans started switching on randomly. I replaced the switch with the NK Technologies AS3-NOAC-FT AC Current Sensing Switch, and fans are switching correctly again.
Jim
2025-06-25 13:15:53
Unfortunately I did not put the switch to use within the Amazon 30 day return period for this item. Right out of the box the item was defective. Before even putting a monitoring load thru the core, the switch is in the closed position. Obviously with only a 30 day warranty from order, they hope to take your money and run before you know that you bought trash. This is the first time in many years I have been burned ordering from Amazon. I do not blame Amazon, they warned me about the 30 day return policy, I only wish they would screen out these losers from their site a little better.Update 8/16/2014 I may have been wrong. I really did not want to believe this product was a total loss or piece of junk. After experimenting with the sensor/switch I found out that switch (on the load line) was in the closed or on position without any current in the sensor line IF THE LOAD IS VERY SMALL. In my case, the sensor was monitoring a pump and my load was only an old fashion, 110V 3W analog clock. I am measuring cumulative running time, to the second, for a pump that only runs about once a week for 20 minutes. With only the clock connected to the switch (load), the clock would run without any current thru the sensor. However, if I also added a 40W incandescent light bulb to the load, same line as the clock, BINGO, the switch opens and neither the clock or light bulb are on until the pump is on and there is current thru the sensor as expected. Now when the pump is on, the clock runs and the light bulb is on. A minor annoyance for me but a satisfactory work around. I am not an electronics expert so am not sure if my observation is typical of solid state electronics or a manufacturing problem with the switch. In any event they advertise the switch up to a maximum number of amps but make no mention of a minimum necessary to function properly. Anyway, I will up my rating to 3 stars and am now happy with the purchase. Jim
Yospeedy
2025-06-03 15:37:32
Use on my dryer to control my dryer power vent fan. Works great. Make sure you have extra room in your dryer outlet box ( one gang extra ).
M. Twain
2025-05-21 14:22:11
Note: I got this for half price from Amazon Warehouse Deals.I am not an electrician and found this very easy to install. In fact I know nothing about wiring which is why I bought this.Just had to know Black = Live/Hot, Green = Ground, White is neutral. Put the White wire through the center. Put Black wire in = L1 , Black Out T1.I hooked this up to a surge protector because they are cheap just in case I fried it, but I didn't fry it +and now I have a surge protector to run my on power appliances.The quote I got was $150 to hook up relay switch and the wiring.How long did it take? 15 minutes and I saved $130.
Aaron
2025-05-09 10:32:06
Great and easy to use product
Robert Burgess
2025-05-05 13:49:00
Ran the dryer's neutral line through it and it turn on the booster fan as it should. No problems.
Nicholas Morison
2025-04-13 17:13:38
No dislikes arrived promptly
Chad
2025-02-15 10:11:45
Actuates 120 Volt Loads upon sensing current flow from another device.
Figs16
2024-11-15 17:19:48
I bought this unit to control a Tjernlund Products DBF2 Dryer Duct Booster Fan which I also purchased from Amazon. The set up worked correctly for about a year and then just stopped working.The fan power consumption is well within the switch rating, so there’s no reason for it to have failed so prematurely.
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