Please read all the instructions before contacting customer support. Ardwolf A10 Fingerprint Touchscreen Door Lock. User Manual This lock is reported to be used mostly in their homes and offices. That said, there are some users who think this really needs a better owners manual as the Manuals and User Guides for Ardwolf A20. We have 1 Ardwolf A20 manual available for free PDF download: Product Manual · 3. Product Introduction · 6. Installation Find helpful customer reviews and review ratings for Ardwolf A20 Security Husband got the instructions out and followed the recommendation to takeView and Download Ardwolf A20 product manual online. Fingerprint Door Lock. A20 locks pdf manual download. View online (25 pages) or download PDF (1 MB) ARDWOLF A20 Product Manual • A20 PDF manual download and more ARDWOLF online manuals.