Hi pete S

If you need to send hex data, this method will work as well:

socket.write("\x04\x01\x00\x00\x00\x00\xE0\x00");
socket.write("\x04\x00\x00\x00\x00\x00\xE0\x00");

or

var string_1 = "\x04\x01\x00\x00\x00\x00\xE0\x00";
var string_2 = "\x04\x00\x00\x00\x00\x00\xE0\x00";
socket.write(string_1);
socket.write(string_2);

or

var cmd_array = ["\x04\x01\x00\x00\x00\x00\xE0\x00", "\x04\x00\x00\x00\x00\x00\xE0\x00"];
socket.write(cmd_array[0]);
socket.write(cmd_array[1]);

or a combination, eg:

var cmd_array = ["\x01", "\x00"];
var string_header = "\x04";
var end_of_package = "\x00\x00\x00\x00\xE0\x00";
socket.write(string_header + cmd_array[0] + end_of_package);
socket.write(string_header + cmd_array[1] + end_of_package);

Just use \x before the hex and put it between "" since it has to be a string.

Rene