Sending telnet commands to turn on/off projector in node.js

I have an Optoma project that I am trying to send commands to. I am able to ping the projector and connect to it with my script, but it is not turning on and off.

Here is my code:

const net = require('net');

// Some sample projector control codes
var NEC = {
    port: 23,
    ip: "xxx.xxx.x.xxx", // ip address
    on: Buffer.from([0x7E, 0x30, 0x30, 0x30, 0x30, 0x20, 0x31]),
    off: Buffer.from([0x7E, 0x30, 0x30, 0x30, 0x30, 0x20, 0x32])
};

var device = NEC;
var command = device.on;

const client = new net.Socket();

client.connect(device.port, device.ip, () => {
    console.log(`Connected to projector at ${device.ip}:${device.port}`);
    client.write(command);
});

client.on('data', (data) => {
    console.log(`Received data from projector:`, data.toString("hex"));
    client.end();
});

client.on('error', (err) => {
    console.log('Error:', err.message);
});

client.on('end', () => {
    console.log("Connection ended");
});

client.on('close', () => {
    console.log("Connection closed");
});

This is the Optoma documentation with the commands

I also found this page

Am I writing out the commands correctly in my script?

I know the projector is able to be reached and the port is correct. Is my script the correct way to go about sending commands?

>Solution :

Telnet is by default line based. That means that each "command" needs the line-ending sequence "\r\n".

You need to add those to the commands you send to the device.