10pcs Plastic Reed Switch Reed Contact Normally Closed Magnetic Induction Switch with 10pcs Small Multi-Use Round Magnets

I got inspired by magnetic switches after seeing how they work in escape rooms, and so wanted to buy some to try in small scaled projects. If you like to create puzzles that involve magnets to activate things, these would come very handy.

These are the worst product I ever spent my money on. I bought this for a project for a led light to turn on and off. You are better off using the normally open ones for better longevity without activating the magnetic function constantly.The distance that a magnetic needs to be near the sensor is so inconsistent. It cannot be touching it, sometimes it works in one direction and next time it works in another. When you decide it is working and mount it, it then refuses to shut off or activate. AFTER positioning this constantly the magnet just breaks the internal switch and it get stuck in one position.These are trash and purely cheap hobby toys. I gave up after trying two of them, ate the loss as I didn't want to return two bent switches of the batch and have them ship this garbage to another person. No way can these be reliable for permanent applications. Definitely should of listened to the bad reviews and saved my money.

The product works well.Had no defective ones.Fast shipping

These are very small reed switches - 1/2" x 1/8" x 1/8". They are normally closed (Form B) SPST reed relays which use a biasing magnet to keep them in the closed position. That is what the review written in French is pointing out. The more powerful magnet supplied in the kit overcomes the biased magnet field and opens the contact when it is near. The little bump in the relay body is the biasing magnet and is installed on the side away from the actuating magnet. The actuating magnet has to be oriented properly N-S so the switch actuates. You'll figure it out by hooking up your ohmmeter and positioning the components while looking for actuation.The switches function properly with a variety of magnets including the ones included in the kit. The problem I ran into is the actuating area. The magnet does have to be extremely close vertically (or touching) to work. The horizontal positioning tolerance over the relay is very tight. The tiniest variation in horizontal positioning cause there to be no actuation. Using a larger magnet does not help. In my application the tolerance of the fit was too much for dependable operation so I ended up going with a NC pushbutton switch. If you can control your positional tolerances these should work.

Just Great Normally Closed Reed SwitchesLIKES:1. EXCELLENT Product Function which is well described within the product description2. Magnets INCLUDED which play a big roll with the reed switches operation3. Solders WellDISLIKES: No dislikes currently

they work, kinda. its not ment for a magnet to be touching the sensor, it works best 4mm away, i would have not purchased if this was the case.

This is a specialty item, they are very small and easy to epoxy to any surface..of course very little current but in today's digital world most things are low current.

Very disappointed with these. I was looking for some inexpensive Reed switches, but I could not reliably get these to work during my testing. Yes the price is very good, but they were such a nuisance to figure out, that I ended up just returning them.