Kera SELENA - Page 35

SELENA Multifunctional LED Clock USER MANUAL V32D
KERA TECHNOLOGIES INC. 2013 www.ledclocks.com
35
MASTER—SLAVE SYSTEM WITH RF ( RADIO ) COMMUNICATION
using EXTERNAL RF MODEM and a PC AS THE MASTER.
GPS WWVB
INTERNET
EXTERNAL RF ( RADIO )
MODEM
WITH RS232 OR RS485 INPUT
( option # 725XRF )
SLAVE CLOCKS
WITH INTERNAL RF ( RADIO ) MODEMS
( option # 725RF )
88:88
88:88
88:88
OPTIONAL
RS232, USB or RS485
COMMUNICATION
RS-232 (PC) to RS-485
CONVERTER may be
necessary
( option # 901 )
PC COMPUTER with RS232 or USB
serial port and with installed
PC2KERA driver S/W
( option # 721 )