Full code for renaming a device remotely with PowerShell

rename-device-full.ps1

# Trust the remote pi and connect to it
Write-Host "Configuring WinRM TrustedHosts..." 
$trustedHosts = Get-Item WSMan:\localhost\Client\TrustedHosts
if ($trustedHosts.Value -eq "") {
	Set-Item WSMan:\localhost\Client\TrustedHosts -Value $ipAddress -Force
}
elseif (-not $trustedHosts.Value.Contains($ipAddress)) {
	Set-Item WSMan:\localhost\Client\TrustedHosts -Value "$($trustedHosts.Value),$($ipAddress)" -Force
}

Write-Host "Establishing PS Session to $deviceName..." 
$pstimeout = New-PSSessionoption -OperationTimeout (1000*60*5)
$session = New-PSSession -computer $ipAddress -Credential $cred -ErrorAction Stop -SessionOption $pstimeout

#Rename Device to Device Name
Write-Host "Renaming Device $ipAddress to $deviceName" 
Invoke-Command -Session $session -FilePath .\Rename-Device.ps1 -ArgumentList $deviceName