Title: Hardware Installation Guide.pdf
The LNL-4420 has an on-board reader interface device capable of supporting up to two readers. When on- board reader(s) are configured, these count as one (1) of the downstream devices.revision 6 — 179LNL-4420 Intelligent Dual Reader Controller36.2The IDRC BoardThe IDRC board contains the following components: one (1) host Ethernet interface, one (1) RS-485 interface, one (1) power-in input, two (2) unsupervised alarm inputs, eight (8) unsupervised/supervised inputs, two (2) reader interfaces, four (4) output relays, four (4) DIP switches, and eight (8) jumpers. It also contains a set of 22 status LEDs and one (1) memory backup (3 volt lithium) battery.The LNL-4420 BoardSTATUS LEDsRESET SWITCH6.00 [152.40]0.2 5[6BATTERY: BR / CR2330 REPLACE ANNUALLY.3 5]5.50 [139.70]CHASSIS GROUND0.50 [12.70]3 VB R C R 2 3 3 0/7B T 1654321BASE 2-DOORJ 1 2U S B H O S TE T H E R N E TJ2B A T2.00 [50.80]+S2TB1 GNDRESETJ11FLTGND TMPGND