The power input of access control system is DC 12V ordinary power supply. Internal board that supports rechargeable battery (3.7V) for power failure alarm (battery not included). Press the keyboard and enter the room number to call the host. This system not only provides two-way voice, and caller ID access control also allows known numbers to call the device.
When the call arrives, it will immediately up, and if it knows the number, it will open the door. The internal rechargeable battery (not including the battery) can be used for work, and an alarm will be issued when the power is cut off, and the battery will be automatically charged when the normal power supply works again. If the battery power is low, an alarm will also be issued.Innovative waterproof lock design and stainless steel front panel. Double relay output can easily control the door opener or alarm components. When talking with visitors, remotely control the relay output by pressing the keyboard. Item Type: Access Control System Material: Stainless steel and ABS Power Input: DC 12V. 1 x USB Program Adapter. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders. This item is in the category "Home, Furniture & DIY\Home Security\Door Entry Systems & Intercoms". The seller is "rightshere" and is located in this country: CN. This item can be shipped worldwide.