Just received 3 units of DW2 and configured them.
- The first one is short circuited on the battery, it pairs, but the magnet does not work and the battery gets hot. Trying to convince the Sonooff oficial store on Aliexpress that this is not normal. It is a shame, the person that is answering my messages does not know what a short is. I'll have to open a dispute on Aliexpress since the person is stalling me.
- The second one is disconnecting from the app at some periods and for no particular reason reconnects again. Already changed position with the second unit (considering weak signal) but the problem remains.
- The third one seams to work fine for now.
- Tha two that as working do not show more than 2 days of logs and it do not report all logs. Since it is a security device, the minimum is that it is reliable when it opens and closes.
I have no problems with wifi connection. It's the sync to the backend server that's the problem.
I can see the DW2 connected to my WiFi Router but the problem lies elsewhere.
Strangely, i've tested my DW2 with a mobile phone hotspot using 4G for the backhaul.
It worked! No delay or anything negative.
So there is something about my router that is preventing the DW2 talking to home.
I've even used 126.96.36.199 for DNS and that didn't work.
So I am going to change my router and see if another one will work with just the standard default settings.
My DW2's used to work great.. for 2-3 days, and then they started this strange behaviour where they are offline most of the time, and when they are online, there are massive delays in their state changes.
I have some Zigbee based Sonoff devices arriving today, and I hope they are better.
I changed my router's configuration from 11b/g/n to 11b. I'm testing..... Now it is working better.
See the wifi configuration at the end of the webpage: https://sonoff.tech/product/wifi-smart-home-security/dw2
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My Zigbee based Sonoff door/window sensors are now installed and working as expected. Model number SNZB-04. Now if only ITEAD could figure out the issue with the DW2 via firmware update, or give us a refund, that would be nice. At this point, I have removed all DW2 sensors from my house.
I know it's not a 'solution' but at least if you get the Zigbee Bridge and the Zigbee door sensors, they work, are smaller, and last longer on a smaller battery.
To be honest, the fact the DW2 requires 802.11b Wi-Fi to work, is not a good sign. That is them trying to get away with the least amount of power usage possible... even when using 2 x AAA batteries.
It is my understanding that the SNZB-04 lasts longer, using just a 'button battery'.
I'll be glad to disable 802.11b Wi-Fi on my network now.
I am facing the same problem and the solution is still not found even my almost so much work disturb due to DW2 several Problems. Now I think I should just move on as I can't bear anymore lose if you guys have any suggestions let me know my blog is: https://www.researchprospect.com/research-methodology/