Secure your home, your rental or business with the Master Lock Select Access Bluetooth Key Lock for unmatched security, simplicity using the latest in Bluetooth lock technology. Controlling access to your home, building sites or managing access to multiple properties has never been more convenient. The Master Lock 5441EUREC Bluetooth Lock Box offers the ultimate convenience in term of key management, everything is managed via your smart phone. These locks withstand physical attacks and hacks, protecting your property with military grade encryption and high-security features. Administrators control individual or system-wide lock access with the convenient app and web interface options, while users enjoy simple, secure access to assigned locks or lock boxes. For added security, consider installing Select Access in a discrete location.