# T25 generates random Bellbutton key presses

**URL:** <https://community.mobotix.com/t/t25-generates-random-bellbutton-key-presses/10032>\
**Category:** Door Station - Discussion\
**Created:** [October 26, 2025, 6:56pm UTC](https://community.mobotix.com/t/t25-generates-random-bellbutton-key-presses/10032 "2025-10-26T18:56:11Z")\
**Posts on this page:** 1\
**Showing post:** 23

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**Author:** ![Mx-JoergS](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.mobotix.com/mx-joergs/32/10425_2.png) [@Mx-JoergS](https://community.mobotix.com/u/Mx-JoergS)\
**Post date:** [November 7, 2025, 1:50pm UTC](https://community.mobotix.com/t/t25-generates-random-bellbutton-key-presses/10032/23 "2025-11-07T13:50:56Z")

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Hello Baggins,

**Is your Camera Bell Button pressed thousands of times?**  
Do you feel that the pressure point of the button is vague or soft?

When you press the button, check in the camera image whether the **CameraBellButton event** is triggered.  
This is the first quick test to determine if your button is functioning correctly.

A button breaking over time without heavy usage is highly unlikely.

### If the CameraBellButton is really damaged:

You can use the **MOBOTIX Management Center (MxMC)** function:  
**Component View → Door Station Wizard**

For detailed instructions, refer to the **MxMC Online Manual**.  
**In short:** If the camera and RFID module are in factory default settings, you can start **Autoconfig** via MxMC.

### About RFID Cards:

We no longer have RFID cards in stock, but you can obtain them from partners:

> **[MX-UserCard1, 10,71 €](https://www.mobotix-shop.com/MX-UserCard1)**
>
> User RFID-Transponderkarte (blau)

Alternatively, you can use any RFID card that complies with the following standard: MIFARE DESFire EV1 4K RFID

> [@What type of RFID card can I use?](https://community.mobotix.com/t/what-type-of-rfid-card-can-i-use/53):
>
> MOBOTIX delivers MIFARE DESFire EV1 4K RFID cards following the ISO/IEC 14443 Standard in the 13,56 Mhz Frequency with the following dimensions: 85,6 x 54,0 x 0,76 mm. MOBOTIX RFID cards are unformatted and have a capacity of 4KB. [mx-admincard1] [mx-usercard1] If you are planning on using 3rd party RFID transponders you should first test the compatibility with the MOBOTIX RFID readers (BellRFID, Keypad, MxDisplay). The flat card form factor chosen by MOBOTIX produces the best results in comb…

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