sixwheeledbeast

a) The DVR is providing the pivot, put simply if the DVR is not connected there would be no access to the LAN. b) Port Forwarding is opening a port through the firewall from the WAN to LAN. Therefore (in a domestic setup) if that LAN device is compromised there are no other layers of protection from other LAN devices. c) Yes d) There are no extensive tests on any DVR/NVR? Most of these are on a P2P network which I would agree are highly likely to be more vulnerable. I mentioned my opinions of the flaws with P2P DVR's, a while back.

It's mesh so as above you can use extra contacts to increase the signal security. Either Contacts or the new external detectors, would do. It will depend on the environment so best to bench test first

IMO this is going way off topic, but... You keep referring this to the same as "engineers codes", most seem to agree this is not the case. If any professional in the trade was fitting cheap DVR's shown as examples here, they won't be worried and neither will the customer. I don't know what you believe trade areas of the forum are for but there are no "engineers codes" shared on this site, trade or public.

I don't believe Scantronic will support multiple shunt resistors. So maybe two zones or different controls?

Shouldn't matter about DDNS on these.

These require good knowledge of IT and Premier Panels to setup. Sounds like you have the panel or ComWifi incorrectly programmed. Best I can offer is start again and follow the manual for the ComWifi word for word, reading several times before starting. External Dynamic or Fixed IP will not matter if setup correctly.

You shouldn't feel tied to ACE. If you own the panel a one off charge and you can switch. The engineers code is a simple way to provide some security to them and there customers but also importantly yourself. They need to know that only there engineers can program the system, to provide you with the best service possible. It's the same for most alarm companies if you switched.

Codes in general are low tech, but why reinvent the wheel? Anything better would have a higher price point.

Texecom Registered installer.

I am not trying to put you off but when flashing it's critical that it goes well or you will brick your panel. If you save a few quid but you brick a panel it's not a good cost saving exercise. Also the flasher has been the same for years, even the older less powerful panels had the same flasher separate. I can only speculate the reasons for this, maybe security or cost are some of the factors.

I second that. The programming port is for flashing only.

Err, well unless on engineer reset, no.

Have you reset the system? It's possible the battery charging circuit is faulty or has a blown fuse.

Eh? Anyway glad your sorted.

Assuming they're wired devices, it still sounds like a programming issue. It should work OTB, maybe if you can't find the attribute that's been changed start a fresh. I would also start to consider if the detectors are in the best location.

Something is programmed incorrectly. This shouldn't happen. Call a local installer?

You can't that would defeat the object of the alarm.

Time to start selling iD biscuits for £50 each then.

Do you not have a WP to test?

Yeah there's Lead Carbon, Sealed Gel but also LiFePo batteries are getting popular for mobility stuff and available in 7Ah I believe. But again is it worth the cost, really the system needs checking yearly anyway.

Lol, bit tricky to get the right voltage. You can get other types like gel and lithium but are they really worth the extra?

Removing the hold-off for a minute or so is enough to check the battery. If the sound dips or has a low output it's likely it's near to failure. They are Nicd so last longer than the lead acid type batteries in the panel. Depending on the box you can't disable the sounder triggering. It will have at least one fixing screw you can't have something like that in the elements only clip on.