Automatic Vacuum Switch for Power Tools to Turn Vac On and Off Auto

I've been using the SENCTRL Automatic Vacuum Switch for about 6 months now with my table saw, miter saw, and router table, and I can't imagine going back to manual dust collection. This thing is brilliant! Setup was super easy—just plug your power tool into one outlet, your shop vac or dust collector into the other, and flip the switch to Auto mode. The load-sensing tech detects when the tool starts and fires up the vacuum instantly (with a smart 1-second delay to prevent any circuit overload—never once tripped a breaker). When I shut off the tool, it keeps the vac running for about 7 seconds to clear the last bit of dust from the hoses—perfect for thorough cleanup without me having to remember to turn it on/off every time. The new generation manual override (Auto/Off/On) is a huge upgrade too. If I'm just running the vac for general shop cleanup or want to force it off during a quick job, it's right there. Build quality feels solid—thick 14AWG cord, sturdy housing, and it handles my 1-1/2 HP dust collector no problem. My shop stays noticeably cleaner, I breathe less dust, and I save time and sanity not fumbling with switches mid-project. If you're tired of dust everywhere or manually starting/stopping your vac, do yourself a favor and grab this. Easily one of the best workshop upgrades I've made—5 stars all the way! Highly recommend for any woodworker or DIYer with power tools. 🚀

This works well if you’re using a vacuum hooked up to your belt disc sander or table saw or other tools that you can hook a vacuum to and that you need when using it, it controls the vacuum to come on just after you start your tool witch is nice that way it doesn’t just draw all the power surge at once, plug in a play easy to set up.

Easy to plug together and works great

So far it is working just as it should. The relay starts vacuum after the tool is started and turns vacuum off after tool has stopped. It helps suck up those loose chips as the saw comes to a stop. All my tools have their own 3hp vacuum. I have 5 vacuum switches and all work great.

2nd time buying product because the 1st one worked flawless until suddenly stopped working after about 2yrs . Giving it 4 stars because it worked perfect for 2 years of very lite use will up grade to 5 if it last at least 6 months of daily use .

It works exactly as it was intended. Slight delay before starting and several seconds delay before stopping. I'm happy with it.

This is an awesome switch, the first one I purchased got attached to my table saw and it has the short cord which gives me the option to use the correct length extension cord that I need. Before I had to bend all the time to turn the vacuum and saw on and off now all I have to do Is turn the saw on. I also purchased a second switch that I keep with the vacuum, and I use all the time with my sanders or tools that have a vacuum attachment. To keep the switch outlets free from dirt and debris I plug them with safety plugs when not in used.

UPDATE 2: After only a couple months, my replacement crapped out (again). Not only does the switched tool outlet not power on when the main tool is activated, no outlet works. It's a pile of junk. I'm happy that Senctrl proactively leaned forward and replaced my original unit, but the fact that two units in a row failed means I simply cannot recommend this for any serious use. I guess if I were more electrically savvy I might be able to crack this open and replace some defective parts (might be that the defects are replaceable by cheap but robust parts), but this hardly makes this a recommendation to buy. If I were you, dear prospective customer...please go shopping elsewhere (I have). UPDATE: Senctrl responded to my negative-ish review by offering me either a refund or a replacement product. I chose the replacement b/c a) I just wanted an auto vac switch that worked, and b) I do understand that some products simply fail earlier than expected, and was more than willing to give 'em a second chance. I am happy to report that the replacement arrived w/in a few days (Amazon normal), and works perfectly upon installation. I'll update this review if the product appears to fail in an unreasonably short timeframe, but for now, kudos to customer support for standing behind their product--I'm pretty sure that I got the replacement outside the official warranty, and for no questions asked. Happy days. //original review follows// I added this to my table saw setup, so I could simply turn on my saw and the attached shop vac w/ cyclone separator would start automatically, without me having to step around to switch it on. Worked like a charm, and I especially liked the feature that kept the vac powered for seven seconds after the saw stopped, to gobble up all those particles still swirling around. All was good for about five months, until one day it simply stopped working. Cold. More specifically, rocking the switch to "off" indeed means that the vacuum won't start. And the "(always) on" position works. It's just that the justification for this $30 switch, the "auto" position fails to power on the vacuum at all. Now, I can work around this by simply switching the rocker to "on" before I power up my saw, but again, this totally defeats the purpose of a little pricey switch box to begin with. And, yes, I verified the issue was not my vac by plugging in another device into the vac port. Clearly something in the unit fried, and this highly disappoints me. It's a solid state product and should last for years and years. Five months? Look elsewhere IMHO.

Definitely a product every contractor should have!

This worked exactly as specified. It’ll will be a great addition to any shop dust collection. Well made works perfect. I highly recommend it.

Me gustó el diseño de este interruptor. No sabía que existía algo que pudiera encargarse de encender la aspiradora automáticamente y que, además de eso, pudiera proteger en algo mi instalación eléctrica. Hubo dos detallitos que me agradaron aún cuando pueden parecer insignificantes; el primero fueron los taquetes y las pijas para su instalación, el otro; que el interruptor estuviera sellado dentro de esa burbuja de hule. El cable es cortito. Debe haber unos 30 cm entre el inicio de la clavija y el aparato. En mi caso es más que suficiente. Hay un LED en la parte de abajo para poder estar seguros de que todo está en orden y funcionando. Espero que este funcionamiento sea prolongado y que dure mucho tiempo. Me agrada bastante la marca DeWalt, esta combinación de colores no podía haber sido más adecuada para mi pequeño taller. Estoy contento con este aparatito. :D

excelente producto

Good