Mitsubishi Interface Unit Board A904016B000G01 A904717B000G03

Mitsubishi Interface Unit Board A904016B000G01 / A904717B000G03 is used in Mitsubishi elevator interface and signal communication applications.

In the elevator spare parts market, this product may also be described as a Mitsubishi elevator interface device, NCR interface board, RS485 protocol board, printed board, or elevator PCB interface unit. The two model references are often important for identification because one may refer to the interface device assembly, while the other may appear as the printed board number.

This page covers the following model references:

• A904016B000G01
• A904717B000G03
• Mitsubishi Elevator NCR Interface Device
• Mitsubishi Elevator Interface Unit Board
• Mitsubishi Elevator RS485 Protocol Board
• Mitsubishi Elevator Printed Board
• Mitsubishi Elevator PCB Interface Board

Public market information shows A904016B000G01 as a Mitsubishi elevator PCB reference, while A904717B000G03 appears together with A904016B000G01 in NCR interface device and RS485 protocol descriptions. These references are useful for search and quotation confirmation, but the final replacement should still be checked against the old unit label and board marking.

Why Two Numbers May Appear on One Inquiry

For Mitsubishi interface units, buyers may see more than one number on the old part.

One number may come from the full interface device, while another number may be printed on the internal PCB. This is why some customers search by A904016B000G01, while others search by A904717B000G03.

For accurate replacement, both numbers should be recorded before ordering. If only one number is visible, photos of the whole interface unit and the PCB surface can help confirm whether the required part is the complete interface unit or only the printed board.

Where This Board Is Usually Checked

This type of interface board is usually related to elevator signal communication and system connection.

Technicians may inspect it when there are issues such as:

• interface communication abnormality
• RS485 signal problem
• external device connection failure
• abnormal response between elevator control system and interface unit
• damaged printed board
• connector or wiring problem around the interface device

These symptoms should not be judged only by the board name. The cable connection, communication line, terminal condition, and related control system should also be checked before confirming the PCB fault.

Practical Confirmation Notes

For overseas spare parts supply, this product should be confirmed by actual photos rather than by model text only.

Useful confirmation information includes:

• clear photo of A904016B000G01 marking
• clear photo of A904717B000G03 marking
• front and back photos of the PCB
• photo of the complete interface unit
• connector quantity and direction
• wiring terminal photo
• elevator system or cabinet position if available
• whether RS485 or NCR interface is mentioned on the old unit

This helps avoid confusion with other Mitsubishi interface boards, such as A904708B000G03 / A904708B000G01, which are also sold in the market as Mitsubishi elevator PCB interface boards but should not be treated as the same product without label confirmation.

Supply Reminder

A904016B000G01 / A904717B000G03 should not be selected only by appearance.

Interface boards may have similar PCB size or connector layout, but the communication protocol, terminal definition, and system application may be different. Before installation, technicians should compare the old and new board carefully and check the surrounding communication wiring.

For accurate supply, matching both the device reference and the printed board number is the safest method.