🔐 Lock in Your Safety with Style!
The MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch is a reliable security solution designed for both commercial and residential use. It features a Normally Closed contact type, ensuring that the circuit is conductive when the magnet is in place, providing instant alerts when the magnet is separated. This sensor is compatible with various security systems, making it an essential addition to your safety measures.
B**H
Great replacement for old broken sensor
The magnet pop-up and destroyed my original 1992 sensor. These worked great as a replacement. I've had them for a while with no issues at all. The quick fit screw connectors made it simple to replace.
E**E
Worked great for our door
Got a new door and needed to get our door sensor working. It worked great! Drill hole to the right depth, egg it out a tiny bit and push in the sensor.
A**R
Slightly oversized
These are slightly larger than 3/8 diameter, would not fit in 3/8 hole in wood framing
D**N
It worked great, and helped me out of a jam with my alarm company!
One of my alarm zones failed and when the alarm company came out to fix it they told me I had to abandon my wired connection and replace it with a wireless sensor. They said the wired sensors weren't available any more. Well, they are, and these were a great solution to my problem. They are easy to work with and they work just fine. Thanks to the vendor for proving my alarm company wrong!
S**B
Defective product received
Ordered a two pack of these sensors. Only one works. The other is defective. Amazon requires me to ship back the product to get a replacement. Already installed the working one, will look for a different vendor for a replacement.
W**S
Works the same as G.R.I. products
Works exactly as intended for pool alarms or door alarms.Magnet activated switch operates at the same clearance as the name brand reed switches.I’ve already purchased two more sets to replace worn out door contacts.MAKE SURE you know if you need “normally open” or “normally closed” switch PRIOR to install!
T**D
Works great - very pleased
Replaced a faulty door alarm switch. A perfect replacement for the one installed by SST in Sun City Festival.
G**Y
They work
They work for my purpose.
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