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84
Overview of the LNL-1320-U Board
The Dual Door Controller (DDC) provides a solution for interfacing to Wiegand Data1/Data0 and Magnetic
Clock/Data readers or keypads (4/8 bit), and door hardware. It can accept data from a reader with clock/data,
Wiegand signaling, or 2-wire RS-485 (OSDP), and provides a tri-stated LED control and buzzer control. Six
form-C relay outputs may be used for strike control or alarm signaling. Eight (8) inputs are provided for
monitoring the door contact, exit push button, and auxiliary inputs (supervised or unsupervised).
Communication to the host controller and other modules is done via a 2-wire RS-485 interface. It requires
12 to 24 VDC for power.
84.1
Package Contents
•
LNL-1320-U board
•
1000 ohm resistors
DDC board (Dimensions are in inches [mm])
Hardware Installation Guide
429
revision 7 —
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