Need to automate a telnet session

I am very new to powershell(only started yesterday)

I downloaded a piece of code which connected via telnet to an IP, which I modified to fit my needs.  It connects fine, but when it asks for password, I want my code to automatically inserts my password, which I specify in my code, then when the telnet menu appears I want to automatically insert menu item 1, and then retrieve the Firmware version of my printer.  We have 500+ printers which I want to do this, so thats why I want this to be automated.

Please help me

See my code below

param(
        [string] $remoteHost = "10.43.4.151",
        [int] $port = 23,
        [switch] $UseSSL,
        [string] $inputObject,
        [int] $commandDelay = 100
     )

[string] $output = ""

## Store the input into an array that we can scan over. If there was no input,
## then we will be in interactive mode.
$currentInput = $inputObject
if(-not $currentInput)
{
    $SCRIPT:currentInput = @($input)
}
$scriptedMode = [bool] $currentInput

function Main
{
    ## Open the socket, and connect to the computer on the specified port
    if(-not $scriptedMode)
    {
        write-host "Connecting to $remoteHost on port $port"
    }

    trap { Write-Error "Could not connect to remote computer: $_"; exit }
    $socket = new-object System.Net.Sockets.TcpClient($remoteHost, $port)

    if(-not $scriptedMode)
    {
        write-host "Connected. Press ^D followed by [ENTER] to exit.`n"
    }

    $stream = $socket.GetStream()
   
    if($UseSSL)
    {
        $sslStream = New-Object System.Net.Security.SslStream $stream,$false
        $sslStream.AuthenticateAsClient($remoteHost)
        $stream = $sslStream
    }

    $writer = new-object System.IO.StreamWriter $stream

    while($true)
    {
        ## Receive the output that has buffered so far
        $SCRIPT:output += GetOutput

        ## If we’re in scripted mode, send the commands,
        ## receive the output, and exit.
        if($scriptedMode)
        {
            foreach($line in $currentInput)
            {
                $writer.WriteLine($line)
                $writer.Flush()
                Start-Sleep -m $commandDelay
                $SCRIPT:output += GetOutput
            }

            break
        }
        ## If we’re in interactive mode, write the buffered
        ## output, and respond to input.
        else
        {
            if($output) 
            {
                foreach($line in $output.Split("`n"))
                {
                    write-host $line
                }
                $SCRIPT:output = ""
            }

            ## Read the user’s command, quitting if they hit ^D
            $command = read-host
            if($command -eq ([char] 4)) { break; }

            ## Otherwise, Write their command to the remote host
            $writer.WriteLine($command)
            $writer.Flush()
        }
    }

    ## Close the streams
    $writer.Close()
    $stream.Close()

    ## If we’re in scripted mode, return the output
    if($scriptedMode)
    {
        $output
    }
}

## Read output from a remote host
function GetOutput
{
    ## Create a buffer to receive the response
    $buffer = new-object System.Byte[] 1024
    $encoding = new-object System.Text.AsciiEncoding

    $outputBuffer = ""
    $foundMore = $false

    ## Read all the data available from the stream, writing it to the
    ## output buffer when done.
    do
    {
        ## Allow data to buffer for a bit
        start-sleep -m 1000

        ## Read what data is available
        $foundmore = $false
        $stream.ReadTimeout = 1000

        do
        {
            try
            {
                $read = $stream.Read($buffer, 0, 1024)

                if($read -gt 0)
                {
                    $foundmore = $true
                    $outputBuffer += ($encoding.GetString($buffer, 0, $read))
                }
            } catch { $foundMore = $false; $read = 0 }
        } while($read -gt 0)
    } while($foundmore)

    $outputBuffer
}

. Main