4 tasti con Sherlock S2 Smart Door Lock Home Keyless Lock Finger Lavora con il blocco meccanico Smart Wireless App Controllo telefono 201013 silver/black sherlock s2 smart stick lock electronic door lock bluetooth wirelless open or close door work smart app control packing list: sherlock lock* 1 (silver or black optional , built in battery) brief introduction: the lock is installed inside of room, instead of outside of room..