The main features:
Type of cards: Mifare smart card
Contact keypad
Microwave card sensing
Opening method setting: Mifare card and password can be used seperately or together.
Smart card can be authorized from the lock, no need the software. Can be set 2 management card, 200 door opening card, password can be set freely, 1 management password and 50 door opening password.
Alarmed when the door didn't really closed.
Low voltage alarming.

Specification:
Working Volt: 6V
Static power consumption: <100??A
Working status: <200mA
Life time for the battery: More than 10 months
Low voltage direction: 4.5V
Sensing distance: >2.5cm
Working temperature: 0-70
Humidity: Less than 80%
Battery supply for the powder, can also use the outer powder to support when battery empty.