For the ones that has experience on Magnetic Reed Switches.
We are using a sensor that uses Magnetic Reed Switches. We put it on the doors in our app, but the place of our application has high humidity when it's raining.
We're having problem with this switches, the contact sometimes doesn't open anymore.
Our circuit is 12V -> reed switch -> 2k7 -> opto. My first thought was about the current, but 2k7 limit the circuit current.
Does anyone has experience with this problem?
Anyone knows a sensor that uses a digital hall effect IC? Using this IC the sensor are more robust (if the IC fails, it will open the contact).