---
title: "How to setup 2-wire VTO and VTH system?"
slug: "how-to-setup-2-wire-vto-and-vth-system"
updated: 2022-02-14T00:37:21Z
published: 2022-02-14T00:37:21Z
canonical: "ametawiki.ametagroup.com/how-to-setup-2-wire-vto-and-vth-system"
---

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

# How to setup 2-wire VTO and VTH system?

### Description

This guide will show how to setup a 2 wire VTO and VTH system.

#### Wiring

1. Connect 2 wires to the two connections labeled under "2-Wire" on the back of the VTO.

![image.png](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/image%28840%29.png)

1. Connect 2-wires to the two connections listed under "2-wire0" on the back of the VTH

![image.png](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/image%28839%29.png)

1. Connect the other end of the 2 wires from the VTO to the 2 connections labelled "CH1" on the VTN.
2. Connect the other end of the 2 wires from the VTH to the 2 connections labelled "CH2" on the VTN.
3. Connect a network cable to the "LAN" connection on the VTN.

![image.png](https://cdn.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/Images/Documentation/image%28838%29.png)

#### Setup

For SIP VTH/ VTO setup, click [here](https://portal.document360.io/698fbf35-46b1-42c8-9a01-0506761ce4e8/document/v1/view/6887a3db-eb99-4a58-a913-f543c9f14541)