Home Security Wired Rolling Door Contact 0~100V/0.5Amp Magnetic Reed Switch MC-51 Alarm Sensor Magnetic Switch with 2 Wires for N.C. Applications
$8.99
Package Content
1 × Magnetic
1 × Sensor Switch
4 × Screw
Type – Normally Closed
Our door reed switches are NC. Please kindly know before ordering.
NC means Normally Closed:When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ).
Door Magnetic Installation Instructions
The Door and window magnets should be installed at the door and the top of the window. The permanent magnet part is installed on the movable door and window. The switch part is installed on the fixed door and window frame. The switch part and the magnet part should be aligned and installed as much as possible. Otherwise deviation from the best conduction area of the magnetic field line and the reed switch contact will shorten the sensing distance. If the misplacement is severely installed, the switch will not sense the attraction of the magnetic field and cause the switch to malfunction.
It is recommended to position the pen before drilling. The door magnet should be away from the string magnetic field interference source such as transformer. Otherwise, the working characteristics of the door magnet will be changed and possible wrong actions may occur.
[Specification] – Current: 0.5A ; Voltage: 0-100V ; Power Rating: 10W; Action Distance: 10~20mm.
[N.C.] – N.C. means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separates, the circuit is not conductive ( light off ). . When make order, pls check carefully!
[Applications] – The Rolling Door Contact is designed for use with window and door alarm systems, such as garage, industrial warehouse and shops, etc.
[Material] – The magnetic switch alarm is with durable zinc alloy housing for better rust resistance.
Customer satisfaction is our greatest pursuit, if you found that our products do not work or quality not as good as you think, please contact us without hesitation.
13 reviews for Home Security Wired Rolling Door Contact 0~100V/0.5Amp Magnetic Reed Switch MC-51 Alarm Sensor Magnetic Switch with 2 Wires for N.C. Applications
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J. Miller –
Very fragile but work great!
I gave my wife one of those book nook craft kits for Christmas. When she finished assembling it I wired it up. The capacitive touch switch for the tiny LEDs was very poor quality. Occasionally it would turn on, confirming I had wired it correctly, but it wasn’t remotely reliable. The theme of the set was magic house (a Harry Potter / Hogwarts knockoff), so I told her I would fix it with magic. I ordered these. I broke the first two as I tried to get it into position, but the third one worked great. I buried a tiny neodymium magnet inside the bristles of a TINY broom and now when she moves it to a particular corner of the room the lights turn on. The reed in these switches have to be sensitive enough to move from the field from the little ~1/8″ magnet through 1/8″ of plywood and a little additional gap from the placement inside the broom. Very impressive!
Frivy –
Fried the switch but it was probably my fault
Switch quality:They served their purpose successfully. I fried a couple by supplying too much amperage but was able to arrange a couple in parallel and make it work.The magnet is very sensitive and maybe a little weak. I glued the magnet to a croc jibit for the project I was doing and it was almost too heavy to use the switch.
David –
Very happy with quality and functionality.
Very good quality and the contact has exactly what I was looking for. Wanted a wide gap switch and with testing the distance the contact changes state when the magnet is with in 2 inches of the contact.
Javier –
muy bueno
funcionales
Juan Carlos Avila Lesmes –
Buen sensor
Perfecto
JG –
No Good
Not everything at a low price in high quantity is a good deal. I bought these to use in a project I am 3D printing. I tested one of these switches right out the bag before installing in the model I printed and it was working. However when I installed it in the model it was intermittently working at best. It turns out there are several dead spots where the magnet makes contact that prevents the switch from closing. Most of the time when it did recognized the magnet, there was significant contact resistance as much as 10 ohms. One lead easily broke off one of the switches. I tried a few more with similar performance. I’m requesting a refund. The cost is not much, but I’m tired of paying for cheap products.
Squatch69 –
Very well priced rugged sensor
I bought this sensor for our front gate. It worked perfectly and the mounting holes lined up exactly where the old sensor was. Wired it up and it has been working great. For the price, this was a great purchase
Luis Antonio Ortiz Perez –
Excelente producto
Excelente producto
JESUS B. –
es compacto y funcional.
Client d’Amazon –
Contacten komen na nog geen 1 jaar vast te zitten.Zelfs bij niet gebruik!
ANTON GEBHART –
Einwandfreie Ware
J. Ritchie –
These are excellent reed switches operating with small magnet
Carlos Rotzinger –
Muy buenos