User Manual
RF Keyless Entry System
(OKA-870T)
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Table of contents
1. USER INFORMATION …………………………...……… 3
2. GENERAL DESCRIPTIONS…………………………….. 4
3. REMOTE TRANSMITTER ………………………………. 5
4. SPECIFICATIONS ……………………………………….. 6
5. FEATURES ……………………………………………….. 7
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1. USER INFORMATION
• Label Information
This device complies with the FCC and IC Rules.
Operation is subject to the following two conditions ;
(1) This device may not cause harmful interference.
(2) This device must accept any interference received. Including interference
that may cause undesired operation.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils
radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi,
même si le brouillage est susceptible d'en compromettre le fonctionnement.
• User’s Caution
The manufacturer is not responsible for any radio or TV interference caused
by unauthorized modifications to this equipment. Such modifications could
void the user’s authority to operate the equipment.
This device and its antenna(s) must not be co-located or operating in conjunction
with any other antenna or transmitter except in accordance with FCC and IC
multi- transmitter product procedures.
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2. GENERAL DESCRIPTION
The radio frequency keyless entry is a system that it controls locking and
unlocking the door and the trunk by wireless remote controller. This system
consists of three components. The TRANSMITTER is a device that
transmits the signal when the button is pressed. The transmission signal
consists of several synchronous codes , unique identification code , security
code and function code. The RECEIVER is fixed inside the vehicle. It works
intermittently to prevent the battery exhaustion. When the receiver detects
the synchronous code, it runs continuously to receive the signals completely.
After receiving the signal, the receiver decides which operation will be
performed. The user can select the following operations by pressing the
button of the remote transmitter.
OPERATION ACTION
LOCK Lock the Door
UNLOCK Unlock the Door
TRUNK Open the Trunk
PANIC
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3. REMOTE TRANSMITTER
You can lock and unlock your vehicle with the remote transmitter.
You cannot lock any of the doors with the remote transmitter if any door is
open or the key is the ignition switch.
•LOCK : When you push the LOCK button, all the doors will lock.
• UNLOCK : When you push the UNLOCK button, all the doors will unlock.
You cannot unlock any of the doors with the remote transmitter if any door
is open or the key is in the ignition switch.
•TRUNK : When you push the TAIL GATE button for 1.0sec, It will open.
•PANIC : When you push the PANIC button, horn will alarm.
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4. SPECIFICATION
EEPROM
32 bytes
Manufacturer
PANASONIC Battery corporation
4-1. RF Part
Operating frequency 313.850 MHz
Oscillation type X-TAL
Modulation type FSK(Frequency shift keying)
Bit transmission rate 1 000 bps
Clock frequency 8 MHz
Communication type Simplex
4-2. Control Part
CPU uPD78F0567MC
Manufacturer : RENESAS Corporation
ROM 4 Kbytes
RAM 128 bytes
Tx bit rate 1 000 bps
EEPROM 32 bytes
Package 20 pin SSOP
4-3. The other
Dimension 39.1(W)mm×70.9(L)mm×17.0(D)mm
Weigh 56g
Battery Lithium cell coin (CR2032)
Manufacturer
Operation Voltage DC3V
Operating Temp’ -20℃∼+60℃
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PANASONIC Battery corporation
5. FEATURES
Transmission frame. The transmission begins immediately in case of LOCK
and UNLOCK, PANIC button is pressed. The transmission frame consists of
the synchronous frame and the data frame. The synchronous frame has
320bit synchronous codes that it will be used for the receiver to wake up.
The data frame consists of 24bit length identification code, 16bit security
code and 4bit function code and 8bit CRC code. 16million different
identification codes are available. The security code is always changed in
case of any of the buttons is pressed. The transmission time is typically
300 milliseconds.
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