Some ECO4 DVRs were produced with a "ECO3" printed on the front. If there is a QR code label on the top of the DVR, it is in fact an ECO4.
You can also identify that your system is an ECO4 (LH150 Series) by checking the model number on the packaging, documentation, and product label for the DVR. Model numbers for ECO4 DVRs begin with "LH15".
Know your DVR:
Last Updated: 9/10/2013