selling l lock electronic smart security lock with card reader

this lock support unlock by card and keys, the keys are for emergency, the card is issued by software. this lock is stainless steel, good quality and durable use; this lock support issue cards by encoder, you can manage the check-in, check-out, card lost, etc in the sofware. this lock is widely installed on wooden door, fit for inn, motel, school, apartments, office etc. we will provide the whole system for your needs. this lock is powered by 4pcs aa baterries, support low voltage alarm. when the battery alarm, you need to replace the battery in time..syi