Continental Automotive Technologies 5WK49123 KEY 5WK4 9123 User Manual Func PL2TX 5WK49123
Continental Automotive GmbH KEY 5WK4 9123 Func PL2TX 5WK49123
User Manual
Siemens VDO Automotive AG SV C BC P2 RF TG
IC: 267T-5WK49123 FCC ID:KR55WK
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File: S:\Postzula\BMW\PL2_Sender\Func_5WK49123.doc Page 1 of 3
User Manual / Functional Description
of the
Siemens VDO
Radio Frequency Transmitter
type 5WK4 9123
Siemens VDO Automotive AG SV C BC P2 RF TG
IC: 267T-5WK49123 FCC ID:KR55WK
______________________________________________________________
File: S:\Postzula\BMW\PL2_Sender\Func_5WK49123.doc Page 2 of 3
General description of the RF transmitter
The RF remote control system consists of a RF transmitter and a RF receiver
mounted within the control unit. The RF transmitter is mechanically integrated
in the head of the key. This transmitter is used to transmit an information for
locking or unlocking the vehicle by an unidirectional RF transmission line for
normal remote operation by pressing a button.
In general the following functions are provided:
- Lock the car
- Unlock the car
- Unlock the trunk of the car
Power supply
The transmitter is provided with 1 Lithium Akku (VL 2020) that gives a tension
of feeding of +3V.
Buttons
There are three buttons which enable to lock and unlock the doors and to
unlock the trunk.
During activation, the button is forced to the ground via a “pull-up” within the
microcontroller.
Siemens VDO Automotive AG SV C BC P2 RF TG
IC: 267T-5WK49123 FCC ID:KR55WK
______________________________________________________________
File: S:\Postzula\BMW\PL2_Sender\Func_5WK49123.doc Page 3 of 3
Block diagram of the transmitter
Technical Data:
Carrier frequency 315.0 MHz ± 0.05%
Output power/field strength: < 10 mW
Type of modulation: FSK
Method of frequency generation: PLL
Number of channels: 1
Power supply: akku (VL 2020)
Type of battery: lithium
Transmission range: < 10 m
Label design
USA/CAN:
Siemens VDO
5WK4 9123
IC: 267T-5WK49123
FCC ID:KR55WK49123
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 interference that may cause
undesired operation.
A
ntenna
RF stage
µC/Transponder
Powe
r
Buttons