A: Our warranty is 1 year. We take strict process from material selection till delivery. We make sure all our locks are stable quality control. Sametime, we will offer 1% main parts for the shipment.

A: Each lock has 2pcs standard mechanical keys.

A:Yes, when battery is less than 4.8V, lock will issue didi sounds. At this moment, still can open door for 200 times. But still better to change batteries.

A:Yes. Please make a video for us to see how many sounds issue when swipe card. We will offer relevant solutions.

A:Yes, our lock standard door thickness is 38-70mm. Also have lock model works for door thickness 30mm-37mm, or even less. Also have models for narrow door panels. Give us a door, we will try our best to fix our lock on it.

A:Yes. We have 2 ways for master key. Example: 500pcs locks.
1st way, we offer same cylinder for 100pcs locks and offer 10pcs keys to open these 500 locks.
2nd way, every lock have its own 2pcs mechanical keys & sametime we offer 10pcs master keys to open all 500 locks. This way cost will be higher since it’s customized.

A:Yes. Install our special energy-saving switch, it can recognize room number ( example:201 power saver only recognize 201 guest card). When checkout time arrives, power will be automatically off & guest card will be invalid and cannot open door.

A:Yes.You can issue 1 card to open main door & guest door for the suite rooms. Sure you need to setup well for the group function first.

A:Yes, you can issue master card, building card, floor card, emergency card etc for staff.

A:Yes. When issue card, you can input name, time (by hour or by day both are fine). Once checkout time arrive, card will be invalid and cannot open door.