---
title: "Model Specification"
slug: "model-specification-4"
updated: 2026-06-15T05:59:18Z
published: 2026-06-15T05:59:18Z
canonical: "knowledge.akuvox.com/model-specification-4"
---

> ## 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 Specification

| Model | X915S |
| --- | --- |
| Touch Screen | ✔ |
| Relay In | 3 |
| Relay Out | 3 |
| Alarm In | X |
| RS485 | ✔ |
| Card Reader | 13.56MHZ&125KHZ |
| Wi-Fi | X |
| Bluetooth | ✔ |
| Temperature Detection | Optional |
| Facial Recognition | ✔ |
| LTE | X |
| USB | X |
| External SD Card | X |

## Supported Card Types

The device’s firmware should be 2915.30.10.416 or higher:

- Unencrypted ID Card:
  - EM4100
  - EM4200
  - HID-Prox
  - HID-iClass

Only X915 V2.0 with an HID-LF or HID-HF module supports reading the HID iClass or HID Prox card. And the firmware version should be 2915.30.10.311 or higher.
- 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)
  - HID iClass Clamshell Card
  - HID-PROXCARD-II Card

> [!NOTE]
> Note
> 
> Only X915 V2.0 with an HID-LF or HID-HF module supports reading the HID iClass or HID Prox card. And the firmware version should be 2915.30.10.311 or higher.

- HID iClass Encrypted Card
- HID iClass Seos Encrypted Card

> [!NOTE]
> Note
> 
> Only X915 V2.0 with HID module installed and firmware version 2915.30.10.524 or higher supports reading the two types of encrypted HID cards listed above.