sterling t Posted September 18, 2020 Share Posted September 18, 2020 i need help with connections. there is no label saying what terminal does what. i would be greatful if anyone can help Quote Link to comment Share on other sites More sharing options...
al-yeti Posted September 18, 2020 Share Posted September 18, 2020 24 minutes ago, sterling t said: i need help with connections. there is no label saying what terminal does what. i would be greatful if anyone can help You know how to trace components? As ground and +12 should be easy to find Quote Link to comment Share on other sites More sharing options...
sterling t Posted September 18, 2020 Author Share Posted September 18, 2020 i have traced it a bit. things like tamper and trigger are a bit harder to find Quote Link to comment Share on other sites More sharing options...
Nova-Security Posted September 18, 2020 Share Posted September 18, 2020 (edited) See which terminal is linked to the transistor then that should be your sounder output Does the chip have 555 on it, as with a couple of caps that your timing circuit so your trigger would go to that chip Edited September 18, 2020 by Nova-Security Quote www.nova-security.co.uk www.nsiapproved.co.uk No PMs please unless i know you or you are using this board with your proper name. Link to comment Share on other sites More sharing options...
PeterJames Posted September 18, 2020 Share Posted September 18, 2020 Why ? Just bin it and by a new bell. surely its cheaper than spending hours fking around with an old bit of tat thats older than the contents of the property your protecting Quote Link to comment Share on other sites More sharing options...
sixwheeledbeast Posted September 18, 2020 Share Posted September 18, 2020 Your best option is to trace everything back from the components. I doubt anyone will have any info about it. Maybe the terminals where labelled on the bells plastics originally. I can't read the chip well from your images but the IC's possibly an opamp, it's datasheet will help Quote Link to comment Share on other sites More sharing options...
sterling t Posted September 18, 2020 Author Share Posted September 18, 2020 28 minutes ago, PeterJames said: Why ? Just bin it and by a new bell. surely its cheaper than spending hours fking around with an old bit of tat thats older than the contents of the property your protecting well, it's not going to be protecting anything, i collect old bell boxes and this is going inside a vented bell box. Quote Link to comment Share on other sites More sharing options...
MrHappy Posted September 18, 2020 Share Posted September 18, 2020 chinese ebay thing ? I certainly can't recall surface components on Bell Module I've ever seen... 2 minutes ago, sterling t said: well, it's not going to be protecting anything, i collect old bell boxes and this is going inside a vented bell box. louvered... Quote Mr Veritas God Link to comment Share on other sites More sharing options...
al-yeti Posted September 18, 2020 Share Posted September 18, 2020 4 hours ago, PeterJames said: Why ? Just bin it and by a new bell. surely its cheaper than spending hours fking around with an old bit of tat thats older than the contents of the property your protecting No fun then? Quote Link to comment Share on other sites More sharing options...
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