The Tuya ZL04 Smart Electronic Door WiFi Lock is a top-quality lock made of Zinc Alloy and is available in two colours: Grey and Gold. It can be installed indoors with a thickness ranging from 35mm to 90mm. The lock measures 72mm x 420mm and weighs 4 kg. It can be unlocked using various methods, including FingerPrint, Password, Card, MechanicalKey, and the Tuya app. It supports IOS 7.0 or above and Android 4.4 or above operating systems. The lock has a battery life of 12000 times, which is equivalent to 18 months or more. The lock is powered by a single lithium battery and works within a voltage range of 7.2V to 8.4V. It has a working temperature of -20-65 ℃ and an operating humidity of 10%-90%.