I have 3 and have to replace batteries every 3 months or so. Also, the reporting is pretty inconsistent (goes from 95% to 73%, back up to 95% and then down to 75%) as shown below.
There is another thread on a similar issue, but my problem appears to be different - the battery % does change when the battery is replaced but it appears to chew through batteries at a fast pace.
I also have an issue where these fall off the network on a regular basis.
Are there any zigbee contact sensors that are more reliable or you would recommend? Smaller profile ones would be better. Thanks for your help
I've had great luck with the ones listed below. A few of us just recommended them in another thread. They've been really solid and easy to pair. If you buy a lot of 10 you can get them for $4 each. They are small and the battery life has been really good. According to the listing where I got them they only have 4 lots left and 280 sold.
Thanks. I may try these (if they are still around) if I continue to have issues with the Sengled. I managed to pair it back up again and so far it seems to be reporting events. The issue is that when I tried to re-pair it using the normal Zigbee pairing process, it paired but would not report any events. I then tried it using the "avoid Zigbee 3.0 repeaters" and it paired and started reporting the activity.
Does anyone know if these have issues with 3.0 repeaters? In the Zigbee graph, none of the Sengled Contact Sensors show up though they appear to be working.
What battery does these units use? No issues with disconnection? I have read some reviews that say they won't stay connected and they drain battery fast but I prefer to take the word of actual users.
For comparison, I have used 20 of these Sengled contact sensors for years. Over that time, I've had 3 or 4 instances where one fell off the network. This usually occurred after the battery drained and I lazily didn't change it for a few days. Pairing can be annoying. A new battery helps the pairing process, but it still can take multiple attempts. As for battery life, mine all fall within 8-15 months per battery (with % flip-flopping at times). Of note, I do not have any Zigbee 3.0 repeaters. My repeaters are older.
They use a CR2450. I have a vague recollection of one of them having to be re-paired, once. I think in the end, I ended up changing the battery and it's the only one. Even when I channel hopped to work on the zigbee offline issue, they just came back up on there own with the exception of a channel or 2 but I had numerous issues with numerous devices on those channels(no idea what they were now). I bought a lot of 10 somewhere in June '23. I picked up another 10 last March. I have only replaced 1 battery as I mentioned before and it's on the most used door by far. It lasted 15 months and the battery I pulled out had no info on it other than it's size. All of the others are still showing 100% battery. Though they will probably just plummet one day given the way these batteries report. Some get considerably more use than others. Good point by JDC, I have all old repeaters as well. The old Iris/Centralite ones but I recently added a Third Reality Plug. It seems to be playing nice, although the one thing that picked it up shows a red connection line. It's the only red line in the graph.
Those coin batteries are either good or basically dead on the percentage reporting. I had one drop from 90% to 9% in a Sonoff motion sensor. Just how it goes since they technically measure voltage.
I only have 3.0 repeaters so I wonder if that would make a difference for me?
