Shanghai Gengda Electronic Technology Co., Ltd. is founded in 2009.We are a private enterprise professionally engaged in security system products in wordwide.Research,production,market and service are integrated one unit.Our categories are hotel lock,access control system,smart card,electronic lock,and all accessories.What a surprise,we are searching new security field actively.

1.Q:Why choose us?

We can offer you best buying experience.We are not only doing business, we are making friends also! Anytime you can contact us to ask any question.We always be professional.We teach clients how to use our hotel lock software system,solve each problem by phone or online tools.

2.Q:How long does the battery last?
It lasts 8-18 months depending on the quality of the battery.

3.Q:How many cards can open a lock?
There is no restriction on the quantity of cards, you can issue as many cards as you like for one lock.

For more details , please contact us without any hesatation !

Contact with me:shb(at)

Skype ID:799982620(at)

Whatsapp:+86-18817590462

Any question, pleas feel free to contact me ! 24 hours online!