August 8, 20178 yr The I/OLInc has a dry contact input. If the door bell button was connected directly to the I/OLinc it would trigger it. If the door bell button has to trigger another doorbell and the I/OLinc. You need a way for it to be triggered by a dry contact connection. If a voltage is applied it easily can be damaged.
August 8, 20178 yr The I/OLInc has a dry contact input. If the door bell button was connected directly to the I/OLinc it would trigger it. If the door bell button has to trigger another doorbell and the I/OLinc. You need a way for it to be triggered by a dry contact connection. If a voltage is applied it easily can be damaged. Ah, so the issue is leaving the chime and transformer connected... the $3 AC relay gduprey listed seems to be a slightly better value in that case.
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