6 unlock methods: APP(Options: Tuya / TT Lock Version,except standard version) / Fingerprint / Password / Smart Card / Key / Wristband Unlock APP Remote Control(Options: Tuya / TT Lock Version,except standard version), No need the Gateway Tuya Version: 8 language voices (Arabic / English / Indonesian / Portuguese / Russian / Spanish / Thai / Vinetnamese) to switch freely, easy to set up. Support anti-peeping password setting Mechanical keys and emergency power supply (MICRO USB) can be used when the door lock is out of power. Welcome and I wish you a happy life, my friend., Manufacturer: MJFVN