WIFISM10CWT Indoor PIR-detector
This Pir-sensor works fine but is questionable for a couple of reasons: It has battery support for the instance when power fails in Your house...but...the the router which usually is not battery protected would fail too, and thus being unable to send You the alarm anyway. Further its pricing is a bit high, compared to a camera with motion detection as an alarm.
I rate it only 40/100 for these reasons.
The manual does not even mention anything about the difference in function with and without using a battery? Even if the battery is mounted, IF the power goes down, it goes down to the router as well... so whats the point with a battery in this detector if You dont have a batterybackuped router and internetaccess?
Also getting into the battery compartment was not well described in the very thin Nedis manual.