---
title: "Model Specification"
slug: "model-specification-31"
updated: 2026-06-17T08:16:34Z
published: 2026-06-17T08:16:34Z
canonical: "knowledge.akuvox.com/model-specification-31"
stale: true
---

> ## 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 | S538 |
| --- | --- |
| Operation System | Android 12 |
| Touch Screen | ✔ |
| Power Supply | PoE or DC24V / 2A power adapter |
| Power Output | Provide 12V / 0.5A output when powered by PoE+ or an external power supply. |
| Relay Port | 3 |
| Input Port | 3 |
| RS485 | ✔ |
| Wiegand | ✔ |
| Light Sensor | ✔ |
| Motion Sensor | ✔ |
| Card Reader | 13.56MHZ & 125KHZ, NFC |
| Wi-Fi | X |
| Bluetooth | ✔ |
| Face Recognition | ✔ |
| Reset Button | ✔ |