We recommend using a regular heat gun to remove a glass mount adhesive tape sticker. Just face the heat gun at the back of the adhesive tape for a minute or two and voila, the adhesive tape should be easily removed.
Once the adhesive tape has been removed from the glass surface you will not be able to reuse it. If you wish to remount the Room Manager on a new glass surface you need to get a new "ERM Glass wall Mounting Kit" (ERM1022), please send an email with your request to our order department (firstname.lastname@example.org) and they will be happy to assist.
If you need mounting instructions for the Room Manager then please check the attachment in the following article.