Hi, I have (or had!) a very stable Z-wave network mastered off a Qolsys IQ 2 Plus from Surety. The Z-wave network consists of a couple light switches, 2 Schlage BE469ZP door locks, an ADC-T3000 t-stat, 3 ADC-S2000 remote temperature sensors and, most recently, an Aeotec ZW095 (Gen 5) home energy monitor.
Prior to adding the home energy monitor, the rest of the nodes on the network have been up and functioning perfectly for months. I had been proactive in monitoring signal strengths and running network rediscovery upon adding any new nodes. I never had a single instance of interrupted communication to the Z-wave mesh.
Strangely, after adding the Aeotec ZW095 home energy monitor (added months after everything else on the network), I have been getting intermittent instances every 1-3 days where each of the two door locks (at different times) would be reported as having gone offline. With time or forced use, the devices immediately come back online again.
All Z-wave devices (including the locks) have their nearest neighbor and route going directly to the IQ panel. The door locks each have multiple neighbors. Additionally, the locks are each “closer” (distance-wise and, I believe, signal-strength) to the panel than the home energy monitor. If I look at the routing on the panel, they ordinarily have “good” signal strength, but when I look at one of the locks when offline, of course it shows as “unreachable”.
After adding the home energy monitor, I relearned the network a couple different times, the most recent time after forcing a change of state in all possible nodes to forcibly wake them up. I am puzzled how having added a single Z-wave device (that should act as a repeated) could do anything other than strengthen the stability of the network.