---
title: "Model Differences and Specification"
slug: "model-differences-11"
updated: 2026-09-15T08:43:28Z
published: 2026-09-15T08:43:28Z
canonical: "knowledge.akuvox.com/model-differences-11"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.akuvox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Model Differences and Specification

| Model | X912S | X912K |
| --- | --- | --- |
| **Front Panel** | Stainless steel | Aluminum |
| **Button** | Numeric keypad | Physical numeric keypad |
| **IK Rating** | IK10 | IK08 |
| Touch Screen | ✔ | ✔ |
| Relay In | 3 | 3 |
| Relay Out | 2 | 2 |
| Alarm In | X | X |
| RS485 | ✔ | ✔ |
| Card Reader | 13.56MHz&125kHz | 13.56MHz&125kHz |
| Wi-Fi | X | X |
| Bluetooth | ✔ | ✔ |
| Temperature Detection | X | X |
| Facial Recognition | ✔ | ✔ |
| LTE | X | X |
| USB | X | X |
| External SD Card | X | X |

## Supported Card Types

The device firmware should be 912.30.11.15 or higher:

- Unencrypted ID Card:
  - EM4100
  - EM4200
- Unencrypted IC Card:
  - Mifare Ultralight C/EV1
  - Mifare Classic Compatible Card
  - Mifare Plus-S 2K
  - Mifare Desfire EV1 2K D21
  - Mifare Desfire EV2 D42
  - Mifare Desfire EV2 D22
  - Mifare Desfire Compatible Card (CPU Card, 4-byte): Incompatible with SmartPlus NFC service.
  - NFC Type2 216
  - NFC Type2 215
- SmartPlus APP NFC
- Mifare Classic S50 4-byte Encryption-Compatible Card
- Mifare Classic ev1 7-byte
- Mifare Plus-S SL3 Encrypted Card
- Mifare Plus-SE SL3 Encrypted Card
- Mifare Desfire EV1 Encrypted Card(AES file encryption mode)
- Mifare Desfire EV2 Encrypted Card(AES file encryption mode)
- Mifare Desfire EV3 Encrypted Card(AES file encryption mode)
- Akuvox Cards:
  - Mifare Classic 1K
  - Mifare S50-1K Card
  - Mifare Desfire EV3 Encrypted Card(AES file encryption mode)