We do not accept P. BOXES - PLEASE PROVIDE A PHYSICAL ADDRESS. We advise you to use a reputable carrier service when returning your goods. Please check the Voltage information and make sure it matches the one in your country. In case it's not stated in the description, do ask us.We guarantee that your issue will be solved quickly. We usually respond within 24 hours on weekdays. Switch between the unlock and lock mode. Unlock Mode: keep the door unlocked while frequent entry or peak hours. Lock Mode: keep the lock locked for verification for privacy and security. Built-in 800mAh lithium batteries last up to 10000 times keyless entry. When power is lowest, it will bump and LED will flashing. Charge it via the micro USB port when the power is off. Have a metal structure keyhole for backup key opening. When the power is off, the door can be opened with key. Note: Please check if the key can be unlocked smoothly after installation. Geek Smart Fingerprint Door Lock - Biometric Door Knob Keyless Entry Door Locks. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Door Locks & Lock Mechanisms". The seller is "baysidemart" and is located in this country: US. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, Korea, South, Indonesia, Taiwan, South Africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi Arabia, Ukraine, United Arab Emirates, Qatar, Kuwait, Bahrain, Croatia, Republic of, Malaysia, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Panama, Trinidad and Tobago, Guatemala, El Salvador, Honduras, Jamaica, Antigua and Barbuda, Aruba, Belize, Dominica, Grenada, Saint Kitts-Nevis, Saint Lucia, Montserrat, Turks and Caicos Islands, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Ecuador, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Vietnam, Uruguay, Russian Federation.