http://www.espow.com/wholesale-security-surveillance-door- locks.html

Item #: ESECU03
Weight: 0.7 pounds
Our Price: US$43.99

Specifications:
Dual function for access control and time & attendance.
Support online hardware controlling.
Support max. 255 network sets.
Built-in with a card reader & W26 interfaces.
Adopt RS485 as the network communication mode.
Support 500 card holders.
Support card password, card plus password & password plus card.
Can record and store data accurately.
Graphic & Chinese language LCD Display.
User Name & Number display on LCD.
With backlight, bell, alarm and massage functions.
Can enter short public and personal messages.
With 10 pcs of Key fobs.
Anti-interference ability and power failure resistance.
Sensitively and response quickly.
Suitable for house, offices, factories, hotels, and schools, etc.
Working voltage: AC/DC 8-25V
Memory: 500 standard users

http://www.espow.com/wholesale-security-surveillance-door-locks.html