relay advice
Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=122577
Printed Date: May 11, 2025 at 6:37 PM
Topic: relay advice
Posted By: yelnats69
Subject: relay advice
Date Posted: July 08, 2010 at 12:41 PM
I have an instrument that has a 12v take off (cable + -)for an alarm buzzer.
The buzzer is one of those small round types
I want to add a much better buzzer and a warning light (led)
I have two wires that feed the buzzer, they are very thin 22-24 gauge or maybe smaller, but the are 12volt.
I want to add a relay to power another buzzer and warning light.
I am concerned about the relay input, it looks to me because the wires are so small I will need a low amperige???? of low current drain relay, the relay max output needs to be 5-10amp.
Can anyone suggest a relay or specs and terminal conections.
I would prefer a waterproof relay but not mandatory.
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S&K
Palm Coast
Replies:
Posted By: oldspark
Date Posted: July 09, 2010 at 3:42 AM
Just about any relay will be fine with that....
Most automotive relays are ~60 Ohm to over 250 Ohm (ie, 250mA to under 60mA).
22G & 24G handle several Amps (eg - around 7A & 3.5A respectively). Not that that means your circuit supplies that sort of current.
Posted By: KPierson
Date Posted: July 09, 2010 at 11:17 AM
Use a reed relay - very little current draw (10mA) and decent output. Also, no audible noise which is nice!
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Kevin Pierson
Posted By: yelnats69
Date Posted: July 09, 2010 at 2:17 PM
Thanks for the fast response, could you suggest a model and the pin-outs
Thanks Stan
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S&K
Palm Coast
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