Aeotec Doorbel instead of Siren for repeater

[Brian H]

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.

[ScottAvery]

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.