Please download it from App Store (IOS) or Google Play (Android).
QR Master is the lock management system for manager use. Its functions include room number management, lock setting, staff management, customer management, key sharing, opening history, etc.
Manager / staff use this App to scan the QR code on lock to open the door. Manager can also send key to customer's App, set customer's key valid time, opening frequency.
After the door is opened, manager can see opening record in real time.