Kramer Electronics Life Jacket 55 series DB 9 User Manual

KRAMER ELECTRONICS LTD.

"55" SERIES DB-9 CONNECTOR PINOUT

DB-9 Pin Number Connected to:

Old Model

Switch # 4

Ground

Vcc = 8V ("55N" series only) Switch # 3

Switch # 1

Switch # 5

Switch # 4

Switch # 3

Switch # 2

Ground

Switch # 1

Switch # 5

Switch # 2

To operate a switch, connect it's pin (5-9) momentarily to pin 3 ("55N"

series only) or to an external 8 VDC supply, in this case, sharing common

ground is a must for proper operation (pin 2). In the "55N" series, it is not

needed to share common ground, as supply is internal.

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