You are downloading the Lux-o-Meter XAP file v188.8.131.52 for Windows Phone. Lux-o-Meter is a free and useful Productivity app: Use your phone as a real lux meter for free!Lux-o-Meter is the first Windows Phone 8.1 application for measuring real illuminance using the ... You can now download the offline XAP file to install & try it.
Download Locations for Lux-o-Meter 184.108.40.206 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Lux-o-Meter XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.