# OpcLimitAlarm Members

> Reference: Represents a snapshot of a 'Opc.UaFx.OpcLimitAlarmNode'.

<dl class="api-definition">
<dt>Type</dt>
<dd><a href="./">OpcLimitAlarm</a></dd>
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx">Opc.UaFx</a></dd>
<dt>Assembly</dt>
<dd>Opc.UaFx.Advanced.dll</dd>
<dt>Package</dt>
<dd>Opc.UaFx.Advanced v2.59.0</dd>
<dt>Also in</dt>
<dd>Opc.UaFx.Client</dd>
</dl>

Inherits members from [OpcAlarmCondition](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcalarmcondition/members), [OpcAcknowledgeableCondition](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcacknowledgeablecondition/members), [OpcCondition](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opccondition/members), [OpcEvent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcevent/members).

## Constructors

### OpcLimitAlarm

<span class="api-meta">since v2.8</span>

Initializes a new instance of the [OpcLimitAlarm](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opclimitalarm/) class using the `dataStore` specified.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcLimitAlarm(IOpcReadOnlyNodeDataStore dataStore)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Sub New(dataStore As IOpcReadOnlyNodeDataStore)
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `dataStore` | [IOpcReadOnlyNodeDataStore](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.iopcreadonlynodedatastore/) | The [IOpcReadOnlyNodeDataStore](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.iopcreadonlynodedatastore/) of the 'Opc.UaFx.OpcLimitAlarmNode' to represent. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `dataStore` is a null reference (Nothing in Visual Basic). |

## Properties

### HighHighLimit

Gets a value which indicates the high high limit of a value to test for the alarm condition.

<div class="api-signature" data-lang="csharp">

```csharp
public double HighHighLimit { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property HighHighLimit As Double
```

</div>

**Property value**

[Double](https://learn.microsoft.com/dotnet/api/system.double)

The optional high high limit to test. For more information see 'Opc.UaFx.OpcLimitAlarmNode.HighHighLimit'.

### HighLimit

Gets a value which indicates the high limit of a value to test for the alarm condition.

<div class="api-signature" data-lang="csharp">

```csharp
public double HighLimit { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property HighLimit As Double
```

</div>

**Property value**

[Double](https://learn.microsoft.com/dotnet/api/system.double)

The optional high limit to test. For more information see 'Opc.UaFx.OpcLimitAlarmNode.HighLimit'.

### LowLimit

Gets a value which indicates the low limit of a value to test for the alarm condition.

<div class="api-signature" data-lang="csharp">

```csharp
public double LowLimit { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property LowLimit As Double
```

</div>

**Property value**

[Double](https://learn.microsoft.com/dotnet/api/system.double)

The optional low limit to test. For more information see 'Opc.UaFx.OpcLimitAlarmNode.LowLimit'.

### LowLowLimit

Gets a value which indicates the low low limit of a value to test for the alarm condition.

<div class="api-signature" data-lang="csharp">

```csharp
public double LowLowLimit { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property LowLowLimit As Double
```

</div>

**Property value**

[Double](https://learn.microsoft.com/dotnet/api/system.double)

The optional low low limit to test. For more information see 'Opc.UaFx.OpcLimitAlarmNode.LowLowLimit'.