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The leak sensor communicates with all dual-band device within range. Any dual-band device that hears the signal copies it to the powerline.

Given that, you may want to unplug the PLM and ISY during outages.

You will be able to control anything that's hard-wired to an INSTEON device.

Create four scenes. Set the On-level for each device in each scene. That includes setting the On-level to Off for each of the three buttons not in the scene.

You can also wait for a period plus or minus a random time, for example: Wait 5 minutes (Random) Wait 30minutes Set ...

It would be unusual for the relay to chatter without affecting the load. A loose neutral at the switch, but not to the load, could cause the switch LEDs to flicker..

A chattering relay is often the result of a poor connection to the line and/or neutral wire.

Use additional programs, each with a different From and To time. Or add more lines/devices /delays to the Then part.

The signal is sent. But metal, especially if it surrounds the sensor, inhibits RF propagation.

Metal door?

After you added the sensor from inside the house?

An easy test is to turn off the fluorescent lights and observe if communication from the door sensor improves.

A SignaLinc is an INSTEON branded device that bridges the opposite legs of the split, single-phase electric supply. I doubt that it would in any way be a detriment to the INSTEON powerline signal. Unlike dual-band devices, only one SignaLinc is required at an electric panel as the SignaLinc is wired across the opposite legs. It's not connected to neutral at all. Only one SignaLinc installed at the main panel is needed no matter how many sub-panels there are. If there is more than one main panel, then each panel should have one. BTW, a SignaLInc is powerline only.

Unless the noise is close to the INSTEON powerline frequency (131.65 kHz), due to the tuning of the hard-wired coupler, it won't pass to the opposite leg. And, if the noise is near that frequency, than any device on that circuit would be affected and a filter would be required. If a filter is installed, than the noise won't be on the powerline.

IMO, every installation should have a hard wired coupler. The INSTEON signal, like electricity, travels in all directions, mostly through the path of least resistance. A signal entering the electric panel is distributed to all breakers as well as the supply wires from the power transformer. A coupler at the panel offers the least resistant path to the opposite leg rather then allowing the signal to travel toward the power source.

or two.

When using a program instead of a scene, a one or two second delay is usually expected.

Any program with conditions will introduce a delay. What are you using to time the delay?

You may want to add an "Or" when heat is called for.

If From 7:30:00PM To 9:30:00PM (same day) And Control 'Master_Bedroom_KPL_Light' is switched On Then In Scene 'Master_Bedroom_Fan_Light' Set 'Master_Bedroom_Fanlinc_Light' 8.5 Sec (Ramp Rate) In Scene 'Master_Bedroom_Fan_Light' Set 'Master_Bedroom_Fanlinc_Light' 25% (On Level) Set Scene 'Master_Bedroom_Fan_Light' Set 'Master_Bedroom_Fanlinc_Light' On

If From 7:00:00PM To 9:30:00PM (same day) And Control 'device that controls light' is switched On or And Status ...

One of my leak detectors stopped sending a heartbeat no matter what I tried (e.g., factory reset, new battery, deleting & adding, etc.). Notification of wet and dry, when tested, function.I consider the device defective and will get a replacement. Unless someone has a better solution

Are you using a scene or a program to control the light?

If Control 'motion sensor' is switched On And Sense 'other light' is not On Then turn it on wait turn it off

Updates are likely to complete while the battery powered device is still in linking mode. Use a tap or two to end that mode before trying to update the next device.