Features: Remote control unlocking, explosion-proof, mechanical unlock. Innovative unlocking and locking ensures sound. Easy installation without plug. Beautiful appearance and arch design, the lock body is relatively thin. Specifications: Material: stainless steel. Colour: silver. Unlock mode: unlocking and unlocking the remote control. Remote control features: the system and remote control for joint use, only the remote control with the appropriate codes can unlock, each lock can meet multiple remote controls. Theft protection: anti-technical opening, anti-master key unlock, anti-card unlock, anti-force damage. Password level: encrypted digital signal, cannot be decrypted. Remote control range: 0-10 m. Number of closures: 300,000. Power requirements: 4 x AA batteries (not included), remote control power supply. Battery life: approx. 1 year Unlocking current: 120 mA. Ambient temperature: -20 to 70 °C, humidity: 25 to 80 %. Product Dimensions: as shown. Package weight: approx. 980 g. Box contents: 1 x lock (main part and tongue). 1 x pocket with screws. 4 x remote control (with built-in button batteries). 1 x mounting tool. 1 x backup battery (23 A, 12 V). 1 x WLAN adapter. 1 x user manual (English language not guaranteed). Note: Please note that the new type and old type of this product will be shipped randomly and make sure you don't mind before ordering.