Two reed sensor closed events in a row. Why??

[Daz M]

My reed sensor on the front door has logged two "closed" events. Once when I left and then rather than logging an open even when I came back, it logged another closed event meaning my actions were not triggered.

See picture attached.

Any idea why?

[Zhiheng Cao]

This is a limitation of the reed sensor. The reed sensor does not have infinite queue in its memory to buffer open/closed when tag manager cannot be immediately reached (for example tag manager may be receiving event from another tag or busy sending out command;) in such case the reed sensor will re-try sending the event after a few seconds. By the time the reed sensor retry sending event, if the door is already closed, a closed event rather than the initial opened event will be sent.  This makes sense for customers who are using reed sensor as a switch for light etc because if sensor is opened and then immediately closed, it is better to not trigger anything at all than trigger with a delay and then untrigger it with a delay.

--
You received this message because you are subscribed to the Google Groups "Wireless Sensor Tags" group.
To unsubscribe from this group and stop receiving emails from it, send an email to wireless-sensor-...@googlegroups.com.
To post to this group, send email to wireless-s...@googlegroups.com.
Visit this group at https://groups.google.com/group/wireless-sensor-tags.
To view this discussion on the web visit https://groups.google.com/d/msgid/wireless-sensor-tags/ca50cddd-289c-47cf-8eee-9db9bd05e5b4%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.