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    Interlogix NX-8v2, Double Zoning

    Whoa, wait! The first time I read your latest post (#6), I got caught up in other stuff and completely missed what you said about switching out the 3.3K resistors resistors for zones 3-7, and also adding 6.98K resistors to each of those zones. Don't do that!! Burg Zones that are not doubled...
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    Interlogix NX-8v2, Double Zoning

    Follow the Installation Manual instructions, and put 3.74K resistors on the lower zones. There's a reason it directs you to use 3.74K resistors. I don't know what tests you ran to ensure it's "working", but I assume everything "worked" as expected---but it doesn't matter. A zone can "work"...
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    Wanted: Looking for a GE NX-148E Keypad Version 4.09

    @ecm1949 It's always a good idea to name the brand of the device you're looking for. In this case, Interlogix (formerly Caddx).
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    Interlogix NX-8v2, Double Zoning

    emc 1949, first I have to warn you that, although I have around 40 years of experience as an alarm tech, working with over a dozen different professional-grade brands (nearly all of the major brands in North America)---by some quirk of fate, I've never worked with the Interlogix brand. My guess...
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    DSC PC1832 Keypad Chime

    I haven't forgotten you, DELtx. I know I have that keypad somewhere, but it's more of an excavation than I thought it would be. I've got my stuff spread out all over.. Still looking.
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    DSC PC1832 Keypad Chime

    Let me see if I have one first, then we'll figure out the postage. I have a lot of stuff to look through, and the KP I'm thinking of might be in a storage locker not too far away (that I need to sort through anyway), and might be some other model not compatible with a PC1832, but it's worth a...
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    DSC PC1832 Keypad Chime

    Ah, that explains your concise and complete description. Unfortunately, tech support for alarm equipment manufactures will deal with only professional alarm dealers. Every company I worked for had an ID Code we techs had to use to let the various tech supports know we were pros. Some brands...
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    DSC PC1832 Keypad Chime

    DELtx, first of all, thank you and kudos to you for a concise and complete description of your problem. It makes it SO much easier to diagnose & troubleshoot when we don't have to play 20 questions about what's going on. Unfortunately, I don't have any more to add to the explanation than you...
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    Old Gemini P800 System

    Napco panels are very unforgiving about forgetting the Dealer Code. Note in the manual that the Dealer Code may be programmed NOT to return to default with a panel hardware default---in other words, if it's locked out for anyone except the original dealer, you may default the panel but be locked...
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    Ademco Vista Mystery with "Stay" Alarm

    Copied and pasted from my reply in doityourself-dot-com, https://www.doityourself.com/forum/electronic-home-security-systems-alarms-devices/632216-ademco-vista-mystery-stay-alarm.html After setting the system to Stay, are you waiting out the full Exit Delay before opening the E/E doors? This...
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    Omegalarm D6112 System Troubleshooting

    That system is at least 30 years old, but Radionics (now Bosch) made solid equipment and chances are good that it's still functional. See if the Control Panel (NOT the keypad(s) power supply transformer (16.5 VAC, 40VA) is plugged in. It's a beige box (wall wart) plugged into an outlet...
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    Installation manual for old Scantronic 4700 alarm system

    Rui De pinho, I'm sorry, but that doesn't look like any panel I've ever worked with. Just going by what I can see, it looks like something dating back to the 80s or 90s, but I could be wrong about that. Here's a link to a site where there are other alarm specialists. One of them might have come...
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    I would like to repair my fridge-freezer. But what's wrong?

    You might try this forum, which has expert DIY advice from pro's that specialize in large kitchen appliances. https://www.doityourself.com/forum/electric-large-kitchen-home-appliances-1/
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    Silent Knight 4720 - how to reprogram the reporting station telephone number via keypad(?)...

    Tenko, if you're still paying any attention to this forum: There's a forum dedicated to DIY alarm advice, with techs familiar with panels that I'm not familiar with. They're your best bet for finding answers to your questions...
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    Silent Knight 4720 - how to reprogram the reporting station telephone number via keypad(?)...

    Tenko, sorry to take so long to get back to you, but I had to do a lot of homework in my spare time before replying. I was a pretty experienced Alarm Tech by ‘92 until I retired about 10 years ago, but I never came across the Silent Knight 4720 Control Panel. My best guess is that they just...
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    Installation manual for old Scantronic 4700 alarm system

    OK, I found a company named "Astron Alarm and Automation," based in Malaysia. So chances are that whatever brand they're using isn't one that I'm going to be familiar with. If you're in Malaysia, your best bet is to ask the Astron Dealership if you can have an Installation Manual for your...
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    Installation manual for old Scantronic 4700 alarm system

    I haven't heard of an "Astron 3000/16" either, and there are no pics attached to your post. Pictures of your Control Panel, as well as keypad,might be helpful. In Alarm-speak, "Control Panel" (CP) refers to the actual "brain" of the system---the keypad is usually just the interface between...
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    Installation manual for old Scantronic 4700 alarm system

    Good find, Martaine. I didn't look for the Scantronic 4700 manual because I was/am unsure what OP was asking for. I couldn't find anything about an "Astron 300", if it exists; and I still don't know how it relates to the Scantronic 4700, if it does. I couldn't find a copyright date in the 4700...
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    Installation manual for old Scantronic 4700 alarm system

    I'm not sure what you're looking for....? You say you have the installation manual for an old Astron 300 alarm system, b700ut the link you provide is for a request for a manual for a Scantronic 4700 Alarm Control. I've never heard of the Astron 300 alarm system, but I worked with...
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    Electrical Circuits

    Why don't you share what you have done so far, and we might be able to comment on it.
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