2N IP Solo Installation Manual page 48

Installation manual 2N® IP Solo
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Warning
When you connect a device containing a coil, such as a relay or an electromagnetic lock,
it is necessary to protect the intercom against voltage peak while switching off the
induction load. For this way of protection we recommend a diode 1 A / 1000 V (e.g.,
1N4007, 1N5407, 1N5408) connected antiparallel to the device.
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