Programming only by downloading, 5200 Programmer or 5100 “Wand” Programmer

Plug programmer in and momentarily short Reset Pin to Terminal 27 to enable program mode

If C1 to C6 use Modem II Format with 4-digit Account, if Virtual Receiver use BFSK with 3-digit Account

Command 43 will cause Panel to answer downloader call (if Command 43 is enabled)