Specifications

CES SUPPORT 407-679-9440 Page 18 MAN79 © CES 2009
Auxiliary relay code (28#)
The RM-20 is equipped with a auxiliary relay. This relay can be used to control external circuitry or devices by
sending a code in DTMF format to the RM-20. A DTMF code (8 digits maximum) followed by digit 1 will energize
the relay and a DTMF code followed by digit 0 will de-energize the relay. The normal state of this relay is disabled.
When the enable code is received, the relay will energize and remain in this condition until the disable code is
received. If power is removed from the RM-20 the relay will revert to its disabled condition. To program this feature
with a code of 12345678 enter the following:
28#12345678#.
To control the relay enter the following:
123456781 to enable it or 123456780 to disable it
Note: If code 13# is enabled, the auxiliary relay can only be accessed by the proper code accompanied by the correct
CTCSS tone programmed on CTCSS RX tone1 (code 5#)
Morse code ID letters (29#)
A Morse code ID can be sent based on a timer, when COR /CTCSS are deactivated or both. When programming the
ID call letters, each character is entered by pressing two (2) numeric keys. This code cannot exceeds 9 characters in
length. To program a call letter ID enter the command code (28#) followed by the 2 numerical keys for each
character followed by the # ( pound ) key. Refer to the Morse code table in this manual.
Example:
To program the call letters KYZJ103 enter the following sequence,
29# 52 93 03 51 10 00 30 #
Over the Air Programming Code (30#)
The over the air programming code must be programmed into the unit before it will work (no factory default).
This code can be up to 9 digits long. To program this code enter the programming mode locally, then program the
remote programming code.
Example: To program a code of 1234 enter 30# 1234#
Factory defaults (99#)
When in the program mode and this code ( 99# ) is entered, the RM-20 will immediately load the factory default
values and any previous programmed parameters will be lost. Refer to programming table summary on this manual
for factory default values.