Igloohome S2 Smart Padlock. Toughest padlock youll ever own. This military-grade hardware has been designed to withstand harsh environmental conditions. Coupled with an intelligent core, thanks to our algoPIN technology, you can be sure your assets are safe anywhere, everywhere Auto Lock Automatically locks once the shackle is fastened. Security Lockout Padlock access is disabled after several incorrect access attempts to ensure your assets are secured. Relock Reminder Alert Lock will display an LED alert to remind users to fasten the shackle. Low Battery Alert Intuitive LED alert will prompt you to charge the batteries when it runs low. Emergency Jumpstart Easily jumpstart the lock with a USB-C cable connected to a power bank if batteries are drained. Rechargeable Battery Simply recharge the lock with a USB-C cable if battery levels run low. 9 months worth of use in less than an hour of charging. Volume Control Adjust the volume according to your preference. Select from levels 0 (mute) to 5 (loudest). OPERATION Modes of access (Entry) PIN code, Digital key Power type Rechargeable Lithium battery Battery life Up to 9 months Battery operating temperature -20°C to 50°C / -4°F to 122°F Operation temperature -20°C to 50°C / -4°F to 122°F Emergency power USB-C Warranty 1 year warranty Certifications IPX7, CE, FCC, ISED, UKCA, UN38.3, ISED, RoHS2, MIL-STD 810H (7 tests)