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What is the input voltage of Kaidishi intelligent lock circuit?

3.7 volts. The capacity of lithium battery used in Kaidishi intelligent door lock is 2000 mAh, and the input voltage is 3.7 volts. Kaidishi intelligent lock is a product of Shenzhen Kaidishi Intelligent Technology Co., Ltd. Kaidishi intelligent lock can be unlocked by fingerprints, passwords, Bluetooth, magnetic cards and other forms. It also has many functions and services, such as preventing cat's eye from opening, intelligently controlling the close key, anti-prizing alarm, remote mobile phone short message alarm and so on.