# Keypad Pincode Formats

All Verkada access controllers are rated to power readers at 12V up to 250mA via the + (VIN) and – (GND) connection. Verkada readers use the 4-port input (labeled as **RS-485**) while standard Wiegand readers use the 4-port inputs (labeled **wiegand**) and the shared power from the RS-485 connection. Read the steps to [connect the reader](/access-control/installation/wire-a-door-to-a-verkada-access-controller.md) to an access controller.

{% hint style="warning" %}
Verkada Access Controllers accept 4-bit bursts for keypad transmission.
{% endhint %}

{% hint style="info" %}
Please set your reader transmission format according to the settings according to the manufacturer’s manual.
{% endhint %}

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## Supported Keypad Transmission Formats

Verkada supports the formats outlined below. When you set up your readers to 4 bits for keypad transmission, it will vary based on your model.

**Example: Rosslare AYC-Q60 reader**

For the **Keypad Transmission Format**, use option **9** as its Wiegand 4-bit.

<div align="left" data-with-frame="true"><figure><img src="/files/NteMwmkxMYp8qtiqLKAy" alt=""><figcaption></figcaption></figure></div>


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