*Unlocking methods -4 options: APP+password button+access card+mechanical key

*Security Convenience: WIFI access, anytime, anywhere security control (optional, sold separately, remotely locked and unlocked through mobile app, set password or quick check)
Battery powered, external power supply, backup key: Smart key lock (not included) 4 AA battery powered
Unlock method: password/card/key
Size: 228.6mm * 71.3mm * 86.2mm

Power supply: 4 * AA battery

Number of keys: 2PCS

Number of access cards: 2PCS