Manufacturer Keri Systems Incorporated Model PXL-500W-1 Dimensions (Enclosure) 13″ H x 9″ W x 4″ D (33.15 cm x 22.95 cm x 6.35 cm) Dimensions (PC Board) 5.6″ H x 6.6″ W x l.6″ D (14.28 cm x 16.83 cm x 2.55 cm) Reader Type Wiegand-compatible device Power Requirements +12 VDC @ 125mA (PXL-500) add 375mA for SB-593 Inputs Door Sense, Request to Exit, Auxiliary/External Time Zone, Card Reader (2), A & B Outputs Form C Lock Relay (3 Amp). Form C Alarm Relay (3 Amp). RS-232 Serial Port (DB-9M). Output for Optional LCD Display Buffer Capacity 65,000 Cardholders, 3,600 Events Temperature/Humidity 32F to 140F (0C to 60C) 0-90% Non Condensing Communication Between Controllers: RS-485, 9600 Baud PC to Master: RS-232 Lithium Battery 5 Years Memory Retention U.L. Listed UL/CSA Certification: The PXL-500 is UL certified under UL-508 (Control Equipment) Warranty Limited Warranty Weight 8.0000