Because the Alarm sound of the bmv is not very loud i want to add a small external siren. A sfm 27 dc 3-24 volt. How do I wire that on the bmv. There is no wiring diagram for the relay. Thank you
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how to wire relay on bmv 712 for external accustic Alarm
Here is a ruff diagram for you, This only shows how to connect the external buzzer if you are using a higher load one then a external relay would also be needed.
