So I'm on a corner office, glass windows both sides. I ordered one and then another when they came back in stock. I love the app on my phone. I set the colors. I set the times so it turns on and off automatically now that I've programmed my office hours. Comes with a small hand-held key fob so I can click it off from my desk if I step out for an appointment or lunch then click it back on when I come back. Then it returns to the pre-programmed times. I have selected colors that match my company logo - White "Open" and Purple border. I have it scroll the letters... O...P....E....N....Not tacky, but classy! BUY, BUY, BUY!!