Brian H

You may want to look at this thread. http://forum.universal-devices.com/topic/19331-my-plm-died-and-i-bought-a-new-one-what-should-i-do-next/?hl=%2Breplace+%2Bplm I have no ZWave devices so I can't comment on how to handle them. If you have a Pro version you can turn Off Automatic Writes to Battery devices. Then write to then one at a time so only one is wake so writes can be done to it.

There is a fairly long thread here on when it will be supported. http://forum.universal-devices.com/topic/21225-isy994i-2844-222-motion-and-fw/ The Alert Module and Siren Module are also not presently supported in 4.5.x firmware. They too are going to be included in a 5.0.x version. When it goes from Alpha to Beta or Released. I may then try it out.

Insure that you don't do a short cycle. Where the time period between the Off and the next On is short. Could be damaged by a short cycle. Almost all of the permanently installed HVAC units have a 5 minute time out between calling for a Cooling cycle. I know my portable room air conditioner use the have restarting issues if the power cycled Off and back On in a short time period.

All about the same age would not explain the problem. Some users have different age modules with different firmware. Some versions of firmware can have issues doing some functions.

Are all the KeypadLincs the same hardware and firmware revision? If they are brand new. Did you factory reset then first? As we sometimes see test links in factory new modules. Not removed before the factory shipped them. Many here have learned to always do a factory reset on any new modules we purchased.

I am glad to see you are back in business. Sorry I was not more specific in my power reset post. Teken nailed it.

Did you try a power cycle reset on the devices? On the off chance they powered back up in a confused state.

Have you tried opening a UDI Support ticket? UDI is very responsive. You can reference this thread in the Support Ticket. http://www.universal-devices.com/contact-support/

There is a Firefox V52 esr version. That still supports the npapi Java Plug In. I found it while searching the Firefox help web pages. I probably will not use it. As I have no big issues so far.

Have you had a chance to read the WIKI information on the Error and Memory LEDs flashing? Even if the PLM was dead. It should not be flashing the Error and Memory LED's. When my PLM failed. The only thing that happened was the system went into Safe Mode. No network issues happened. You even tried two ISY994i controllers with the same problem. Pointing to a network issue. You have something bad in your network. The two LEDs in the Network Jack of the iSY994i. Are they On and if there is network activity one maybe blinking? By chance did this happen when you had to change your internet modem and is it also your router?

If the Error and Memory LEDs flashing it is a network problem. From the UDI WIKI. http://wiki.universal-devices.com/index.php?title=Main_Page#Front_Panel_LEDs.2FLights

Is the 2441ZTH running on an optional DC wall wart or battery? On battery it is in power saving mode and a Query will not work unless woken up. Though it should send temperature changes when detected. Not sure how much of a temperature change is needed for it to send an update.

My Firefox just updated also. Now I get an annoying pop up informing me a web site, including here, is not secure. Log ins could be compromised. Then again when I click on the Password line. Password maybe compromised if you continue message. I have found no way to disable this very annoying feature.

Stu, Are you referencing the NC and NO relay contacts or the magnetic sensor in the kit? I just looked. The present kit has the single contact arrangement magnetic sensor. Not the older more expensive one with NO and NC outputs.

It does sound like the PLM maybe on its way out or failed. If it is over two years old and is a 2413S. When you cycled the power. Did you power up the PLM first and allow it to initialize? Before powering the ISY994i controller?

There are a few threads here on the All-On phenomenon. Many times there was a Motion Sensor in the mix.

Smarthome recently updated the sales page for the I/O Linc to indicate it was power line only and a range extender maybe needed in some installations. I imagine many users where not aware the I/O Linc was an older design power line only module. The box I got my Retail Boxed I/O Linc actually says on it "Wire Band".

It has served you well. Probably much longer than the slightly over two years old most fail at. If you decide to try and rebuild the module as a spare. The V1.0 hardware was different. There was some rework on the main board to add the second capacitor and coil. They are hanging above the main board and not soldered directly to it. Somewhere in the large PLM repair thread here. Is a photo of the V1.0 layout. http://forum.universal-devices.com/topic/13866-repair-of-2413s-plm-when-the-power-supply-fails/

While the Open/Closed Sensor. Needs no AC wiring to use it. Like mounted on a door to detect when it was opened. Both modules have advantages depending on where used and what you want to do with it.

I had the same issue. When I replaced some 2456S3 AppliaanceLincs with the 2635-222 On/Off Module. As Teken pointed out. They are not a same module type so the replace with will not offer it as a replacement.

Did you follow the instruction on how to replace the PLM? http://forum.universal-devices.com/topic/19331-my-plm-died-and-i-bought-a-new-one-what-should-i-do-next/ Have there been any changes in the home? Like a new electronic device or moved an existing electronic device. Is the PLM on the same electrical circuit as the computing equipment? If it is are you using a filter to isolate the computing equipment from the PLM?

Depending on the hardware revision of the 2412S. It may have the small Link Database size of 417 links the later ones where >2000 links but more than 800 would slow it down too much.

Pop and LED off. Has failed completely. You need a new one or rebuild the old one. Make sure you follow the proper replacement thread in an earlier post in this thread.

I would also say PLM is failing. Long thread on how it fails and how some of us have repaired ours. http://forum.universal-devices.com/topic/13866-repair-of-2413s-plm-when-the-power-supply-fails/

I have seen the same grey updates needed when I have automatic updates to battery devices is disabled in my Pro version. I keep mine off but lately temporarily enable it when doing anything with a battery operated Insteon Module. You can hold the set button on the RL2 until the LED flashes. Then click on the A button entry and pick update.