SMONET IC Card Use for Smart Lock Deadbolt Work with TTlock

The size of each Keys fob is 40mm*25mm*4.5mm, and the weight is 5g. It's easy to carry and put in bags or pockets. This work with the TTLOCK app, add/delete information in the App. You can also share the Card with your family members, relatives, and tenants. One-year warranty and lifetime tech support. We have a professional customer service team, please contact us if you have any questions. The data of FOBS will be saved for about 10 years. please be careful not to lose it..syi