Item Type: Remote Control Lock Material: Zinc Alloy Lock: Frequency: 433Mhz ( 50Khz) Remote Control Range: Approx. 0.5 - 15m/1.6 x 49.2ft Working Temperature: -10 - 60 Working Humidity: 5 - 60% Power Supply: 4 PCS AA batteries (not included) Battery Life: Use 20 times a day for about 6 months Unlocking Mode: Remote unlock /Bluetooth unlock of mobile phone Size: Approx. 155 x 80 x 35mm/6.1 x 3.1 x 1.4in Remote Control Standard Number: 4 PCS Remote control range: Approx. 0.5 - 15m/1.6 x 49.2ft Working Humidity: 5 - 60% Power Supply: 1 x CR2032 button battery, 100mAh (built-in battery) Battery Life: Replacement every 6 months is recommended Remote Control Registration Number: Up to 20 registrations Transmission Mode: Each frequency conversion signal, to prevent replication How to Use: 1. Install 4 x AA batteries(Not included) into the product, you can use the remote control to unlock. 2. Download the APP for "TUYA Smart", turn on the Bluetooth of the mobile phone, then plug the doodle Bluetooth adapter into the power plug, connect it with the lock using the Bluetooth of the mobile phone, and unlock the lock with the mobile phone. 1Two unlocking methods include wireless remote control unlocking and mobile phone Bluetooth unlocking. 2For Tuya Bluetooth Smart Lock, which can realize intelligent linkage with other for Tuya?supported products. 3Dual circuit, high performance, fast identification, dry battery power supply. Zinc alloy shell, sturdy and durable, maximize durability. 4Invisible lock, only supports indoor installation and use. Simple and convenient installation, no additional wiring required. 5Suitable for all types of doors including wooden doors, glass doors, metal doors, etc. 1 x Remote Control Lock 4 x Remote Control 1 x USB Doodle Bluetooth Adapter 1 x Lock Box Bracket 1 x Retainer 1 x Install Accessory Kits 1 x USB Cable 3 x Tape 1 x English Instruction Manual