Nidec NMOK-451T RF Keyless Entry System Transmitter User Manual
- June 5, 2024
- Nidec
Table of Contents
Nidec NMOK-451T RF Keyless Entry System Transmitter User Manual
Constitution of the Radio Frequency Keyless Entry System for vehicle
The radio frequency keyless entry is a system that it controls locking and unlocking the door 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 |
| Panic | Alarm the Panic |
Transmitter f = 433.92MHz
User’s manual (provisionally)
REMOTE TRANSMITTER
You can lock and unlock your vehicle with the remote transmitter.
LOCK
When you push the LOCK button, all the doors will lock. You cannot lock any of
the doors with the remote transmitter if any door is open or the key is the
ignition switch.
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.
PANIC
When you push the PANIC button for 1.0sec, horn will alarm.
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.
FCC/ISED NOTICE
[FCC]
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions:
- This device may not cause harmful interference, and
- This device must accept any interference received, including interference that may cause undesired operation.
Caution: Any changes or modifications to this device not explicitly approved by manufacturer could avoid your authority to operate this equipment.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be collocated or operating in conjunction with any other antenna or transmitter unless authorized to do so by the FCC
[ISED]
This device contains license-exempt transmitter(s)/receiver(s) that comply
with Innovation, Science and Economic Development Canada’s license- exempt
RSS(s). Operation is subject to the following two conditions:
- This device may not cause interference.
- This device must accept any interference, including interference that may cause undesired operation of the device.
This equipment complies with ISED radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be collocated or operating in conjunction with any other antenna or transmitter unless authorized to do so by the ISED