Losing the admin or master card for an audio intercom system is a common but stressful situation for property managers, installers, and homeowners. Without a master card, routine card management—adding new residents, removing lost cards, or replacing departed staff—comes to a halt. The good news is that most audio intercom systems provide a recovery path, either through the indoor monitor menu, a reset procedure, or a hardware reset button. Understanding which method applies to your FARHD system can restore control quickly without replacing hardware.

FARHD has manufactured audio and video intercom systems since 1998, with 28 years of experience and full in-house R&D and production of core components. Its audio intercom systems support easy card addition and deletion, and its 2-wire video door phone systems pair a 10″ indoor monitor with an outdoor call panel for flexible access control. This guide explains how to recover from a lost master card, then walks through the standard add and delete procedures so you can manage cards confidently once access is restored.

First, Confirm What “Admin Card” Means on Your System

Before troubleshooting, clarify the terminology. On most audio intercom systems, there are two distinct forms of authority:

The admin password is a numeric code entered on the indoor monitor to access the card management menu. On FARHD systems, the factory default admin password is typically 666666. If the password has never been changed, or if it can be reset, you may not need a master card at all—the menu itself is sufficient for adding and deleting cards.

The master card (admin card) is a physical RFID card presented to the outdoor reader to enter card addition or deletion mode. This is the card that has been lost. Some systems use separate “ADD” and “DELETE” master cards, while others use a single master card with different tap sequences for each function.

The recovery strategy depends on which authority you still have. If the admin password is known, start with the indoor monitor menu. If the password is also lost, a reset may be required to restore the system to a manageable state.

Recovery Path 1: Use the Indoor Monitor Menu (If You Know or Can Reset the Admin Password)

The indoor monitor is the primary management interface on FARHD 2-wire systems. If you can access the card management menu, you can add a new card—including a replacement master card—without needing the old master card at all.

Step-by-step:

1. Access the settings menu. From the main interface on the indoor monitor, tap the settings icon.
2. Select “Card Management.” This option may also be labeled “Access Control” or “RFID Management,” depending on the firmware version.
3. Enter the admin password. The factory default is typically 666666 on FARHD systems. If the password has been changed and is unknown, proceed to Recovery Path 3 (hardware reset) before continuing.
4. Tap “Add Card.” The system enters card-swiping mode.
5. Present the new card you want to use as the replacement master card to the outdoor call panel reader. The system will confirm registration with a beep or an on-screen message.
6. Verify the card appears in the card list. Return to the card list and confirm the new card is registered.

If the system supports designating a specific card as a master card within the menu, assign that role during this step. If the menu only adds “user” cards, the new card will function for door opening, and you can continue managing all future cards through the monitor menu—effectively making the physical master card unnecessary for daily operations.

This is the cleanest recovery path: it preserves existing card data, requires no hardware reset, and restores full management capability through the monitor itself.

Recovery Path 2: Use a Remote Control or Alternate Credential (If Available)

Some audio intercom systems ship with a remote control or allow a secondary credential to enter programming mode. If a remote control is available and the admin password is unknown, the remote can sometimes be used to enter the system’s programming state and create a new master card. The exact sequence varies by model, so consult the product manual for the specific remote-control programming steps.

This path is model-dependent and less universally applicable than the monitor menu or hardware reset, but it is worth checking before resorting to a full reset, because it may allow you to recover without erasing existing card data.

Recovery Path 3: Hardware Reset to Factory Defaults (When Password and Master Card Are Both Lost)

If neither the admin password nor a remote control is available, a hardware reset is the remaining option. This restores the system to factory defaults, including the admin password, but typically erases all registered card data. Treat this as a last resort and plan to re-enroll all user cards afterward.

General reset procedure (confirm against your specific model):

1. Power off the device if the reset button is not safely accessible with power on.
2. Locate the RESET button on the mainboard or control board. On many access control and intercom devices, this is a small button inside the housing or on the circuit board.
3. Short-press the RESET button (approximately 2 seconds) until you hear a single beep, then release. On some systems, this restores the admin password to the factory default without erasing card data.
4. If a longer reset is required, press and hold RESET for approximately 5 seconds until you hear a continuous series of beeps, then release. The system will initialize automatically, and all card data and management passwords will be cleared to factory defaults.
5. After reset, log in with the factory default admin password (typically 666666 on FARHD systems, though some models may use 1234 or another default—check the product label or manual).
6. Re-add all user cards through the indoor monitor menu or by creating a new master card, following the standard procedures below.

For audio intercom systems without a monitor, the reset button may be on the outdoor panel or a dedicated control unit. The reset button may also be accessible through a small pinhole on the housing, requiring a paperclip or pin to press.

Creating a New Master Card After Reset

Once the system is reset and you can access the card management menu, create a new master card immediately so that future management does not depend on the monitor menu alone.

Method A: Designate a card as master through the menu.
Follow Recovery Path 1 above. When adding the new card, if the menu offers a “Set as Master” or “Admin Card” option, enable it. This card will then function as the physical master card for future additions and deletions.

Method B: Use the first-card programming method (model-dependent).
On some systems, the first card swiped after a reset or after entering master-card programming mode automatically becomes the master card. In standby mode, enter the card management state (sometimes by pressing and holding a designated button, such as the PA button, for 3 seconds), then swipe the intended card. The first card becomes the “Add Card Master” and the second card swiped may become the “Delete Card Master”. Confirm the exact behavior for your model before relying on this method.

Method C: Create a duplicate master card using the existing master card (if only a duplicate is needed, not a replacement).
If the original master card is physically available but a spare is needed, many systems allow duplication by touching the master card to the reader three times, then presenting a blank card within 15 seconds. This does not apply when the original master card is lost, but it is useful for preventing future loss emergencies.

Standard Add and Delete Card Procedures (After Access Is Restored)

Once a new master card or monitor-menu access is in place, day-to-day card management follows a consistent pattern.

Adding Cards

Via the indoor monitor menu:
Access “Card Management” → enter admin password → tap “Add Card” → present each new card to the outdoor reader → verify the card appears in the list.

Via a master card:
Present the “ADD” master card to the outdoor reader. The system enters addition mode. Present each new card one by one. Present the master card again to exit addition mode.

Deleting Cards

Via the indoor monitor menu:
Access “Card Management” → enter admin password → select “Delete Card” → present the card to be deleted to the reader → confirm deletion → verify the card no longer appears in the list.

Via a master card:
Present the “DELETE” master card to the reader. Present each card to be deleted. Present the master card again to exit deletion mode.

On some systems with a single master card, tap the master card twice to enter deletion mode, tap the cards to delete, then tap the master card once more to finish.

Deleting All Cards (Factory Reset via Master Card)

If you need to repurpose the system or start fresh, some FARHD-compatible systems support bulk deletion: present the “DELETE” master card, then present the “ADD” master card to initiate a format, then present the “ADD” master card again within 3 seconds to confirm. Warning: this action is irreversible. All registered cards will be removed.

Troubleshooting Common Card Issues

Prevention: Protect Against Future Master Card Loss

Losing a master card is disruptive. A few practices reduce the risk and the recovery time:

• Create and store a spare master card immediately after installation. Keep it in a secure location separate from the primary card.
• Record the admin password in a secure building management document, and change it from the factory default 666666 after first login.
• Use the indoor monitor menu as the primary management interface where possible, reducing dependence on a physical master card for daily operations.
• Maintain a card inventory tracking which cards are issued to which residents or staff, so that lost cards can be identified and deleted promptly.
• Delete lost cards immediately through the monitor menu or master card, even if the master card itself is not lost.

Why FARHD for Audio Intercom Card Management

FARHD’s audio intercom and 2-wire video door phone systems are designed with card management simplicity in mind. The 10″ indoor monitor provides a large touchscreen interface for adding, deleting, and querying cards, while the outdoor call panel includes a built-in RFID/IC card reader supporting both 13.56MHz IC and 125kHz ID cards. The factory default admin password is documented, and the system supports recovery through the monitor menu or hardware reset when credentials are lost.

For distributors, integrators, and property managers, this means fewer after-sales calls related to card management and faster resolution when a master card is lost. FARHD’s 28 years of manufacturing experience, in-house production of core components, and international certifications including CE, FCC, RoHS, IP65, and EMC support reliable performance across audio and video intercom product lines. A dedicated technical support group is established upon product delivery to assist with programming, installation, and card management questions throughout the process.

If you are managing a FARHD audio intercom system and need model-specific guidance on master card recovery or card management procedures, the FARHD technical team can provide the exact sequence for your product.

We look forward to building a strong partnership with you and jointly shaping the future of smart living.

Email: info@farhd.com
Website: www.farhd.com
WhatsApp: +86 188 2370 9809 / +86 199 2545 1918