Power off SteamVR device

steamvr_device_poweroff.cs

    System.Diagnostics.Process process = new System.Diagnostics.Process();

    process.StartInfo.FileName = "C:\\Program Files (x86)\\Steam\\steamapps\\common\\SteamVR\\tools\\lighthouse\\bin\\win64\\lighthouse_console.exe";
    process.StartInfo.Arguments = "/serial 81F6B76702 poweroff";

    process.StartInfo.UseShellExecute = true;
    process.StartInfo.CreateNoWindow = true;
    process.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;

    process.Start();