SED-902 MASTER GUIDE
11
AC Power in
16V AC 1.5A
Battery in
12V Backup battery 7 AH gel cell (do not wire 12V DC into this)
RS485 Port (not used for comms)
RF Link Relay
Relay is active when the Master and Remote units are within range and linked
DB 9 Serial
For PC configuration 8,N,1 @115k
RJ11 EXPANDER Port
Used to link boards via RJ11 jumper cable
External Antenna Supplied
It is recommended that the external Antennas are mounted outside with clear line of sight
between the two ends.
The Antenna should be mounted as high as possible and free of metal obstruction. By
doing this, it will ensure the best possible operational range.
12V DC Operation
The Master and Remote boards can be power by a regulated 12V DC supply.
Wire the 12V rail into the RS485 +12V and GND (COM) terminals.
Do not use the battery input as its only for a GEL CELL BATTERY
