Hyundai SMK 4E09 Users Manual

Description of SMART KEY ECU

1. GENERAL DISCRIPTION
If the button of door handle or SSB button is pressed, SMART KEY ECU output

the LF(125kHz) signal.

1) LF signal output for engine start
SSB button is pressed, SMART KEY ECU output LF signal through the interior LF antenna

for Fob searching.

2) LF signal output for door lock/unlock and trunk release
The button of door handle or trunk is pressed, SMART KEY ECU output LF signal thtough the exterior

LF antenna for Fob searching

2. ELECTRICAL CHARACTERISTICS

SMART KEY ECUmodel name

Operating voltage 9V ~ 16V

Dark current 5mA Max.

Operating frequency 125KHz

Modulation ASK

Operating temperature

-30℃ ~ +75℃

FCC Warning

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of the following measures:

■ Reorient or relocate the receiving antenna.

■ Increase the separation between the equipment and receiver.

■ Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

■ Consult the dealer or an experienced radio/TV technician for help.

Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void
your authority to operate this equipment.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.