Continental Automotive 5WY8201-2-3 TX Transmitter User Manual Manual
Continental Automotive GmbH TX Transmitter Manual
User Manual
Siemens VDO Automotive AG SV C ER
File: S:\Postzula\Dwmc\Func_TX_Dwmc.doc Page 1 of 4
User Manual / Functional Description
of the
Siemens VDO
TX Transmitter
type 5WY 8201-2-3-4-5-6
FCC ID:KR55WY8201-2-3
Siemens VDO Automotive AG SV C ER
File: S:\Postzula\Dwmc\Func_TX_Dwmc.doc Page 2 of 4
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 trunk
Power supply
The transmitter is provided with 1 Lithium battery (CR 1616) that gives a
tension of feeding of +3V.
The battery inversion is protected mechanically.
Buttons
There are two buttons which enable to lock, unlock the doors and unlock the
trunk. During activation, the button is forced to the ground via a “pull-up”
within the microcontroller.
LED
The LED is turned on between transmission blocks.
Variants
Siemens type designation frequency difference
5WY 8201 315 MHz without transponder
5WY 8202 315 MHz with transponder-master
5WY 8203 315 MHz with transponder-non master
5WY 8204 433 MHz without transponder
5WY 8205 433 MHz without transponder
5WY 8206 433 MHz with transponder-non master
All variants have the same schematic, pcb and layout. The
only difference is the transponder usage.
FCC ID:KR55WY8201-2-3
Siemens VDO Automotive AG SV C ER
File: S:\Postzula\Dwmc\Func_TX_Dwmc.doc Page 3 of 4
Typical usage pattern
30 lock / unlock operations in 24 hours with a typical transmission duration of
270 milliseconds → 1.25 lock / unlock operations / hour
Transmitter ON 0.3375 seconds / hour
Transmitter OFF 3,599.6625 seconds / hour
Duty Cycle: TON / T (ON+OFF) x 100% = 0.3375 / 3,600 x 100 % = 0,009 %
Block diagram of the transmitter
Technical Data:
Carrier frequency: 315 MHz ± 0.05%
Carrier frequency 433 MHz ± 0.05%
Output power/field strength: < 10 mW
Type of modulation: ASK
Method of frequency generation: SAW
Number of channels: 1
Power supply: battery (CR 1616)
Type of battery: lithium
Transmission range: < 6 m
LED
Antenna
RF stage
µC/Transponder
Power
Buttons
FCC ID:KR55WY8201-2-3
Siemens VDO Automotive AG SV C ER
File: S:\Postzula\Dwmc\Func_TX_Dwmc.doc Page 4 of 4
Label design
Europe: (433.92 MHz)
5WY 8203-4-5
USA / Canada: (315 MHz)
5WY 8201-2-3
FCC ID:KR55WY8201-2-3
CAN: 267 xxx xxxx
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 received, including
interference that may cause undesired operation.
FCC ID:KR55WY8201-2-3