Get-SCCMClientSiteMode.ps1

function Get-SCCMSiteMode($ComputerName)
{
    if ( $(Get-Service -Name CcmExec -ComputerName $ComputerName -ErrorAction SilentlyContinue) )
    {
        
        try { $CCM_ClientSiteMode = Get-WmiObject -Namespace 'ROOT\ccm' CCM_ClientSiteMode -ComputerName $ComputerName -EA SilentlyContinue  }
        catch { $CCM_ClientSiteMode = $NULL}
                    
        if ($CCM_ClientSiteMode)
        {
            $SiteModes = @{
                '0' = 'Unknown'
                '1' = 'Mixed Mode'
                '2' = 'Native Mode'
            }
            if ($CCM_ClientSiteMode.SiteMode.ToString() -eq $null) { $SiteModeText = 'Not Available' }
            else { $SiteModeText = $SiteModes[$CCM_ClientSiteMode.SiteMode.ToString()] }
        }
        else
        {
            Write-Warning "Could not connect to WMI class CCM_ClientSiteMode on '$ComputerName'." 
            $SiteModeText = 'Not Available'
        }
    }
    else
    {
        Write-Warning "Could not find 'CcmExec' service. SCCM Client is not available."
        $SiteModeText = 'No Client'
    }
    Write-Verbose "SCCM SiteMode:`t$($SiteModeText)"
    Write-Output $SiteModeText

}