Network Setup

The RELO IO8 connects to your network over Gigabit Ethernet. By default it uses DHCP and will obtain an IP address automatically. For production installations a static IP is strongly recommended so that automation flows, remote systems, and Cueva Desktop can always find the device at a known address.

Step 1: Connect and power on

1. 1Plug a Cat5e or better patch cable from the RJ-45 port on the rear of the RELO IO8 to a switch or router on your network.
2. 2Connect the AC power cable and switch the unit on using the front-panel power button.
3. 3The PWR LED will illuminate green and the NET LED will turn amber when a link is established.
4. 4Wait approximately 20 seconds for the device to complete its boot sequence. The NET LED will begin blinking once the device is ready.

Step 2: Find the device on the network

Open Cueva Desktop. The application scans the local network using mDNS/Bonjour and will display the RELO IO8 in the device list within a few seconds. The default hostname is relo-io8-[last-4-digits-of-MAC].local. If the device does not appear, check that your computer and the device are on the same subnet and that the NET LED is blinking.

Step 3: Access the web interface

Open a browser and navigate to the IP address shown in Cueva Desktop, or use the mDNS hostname directly (e.g. http://relo-io8-a4f2.local). The built-in web interface loads immediately. No login is required on a fresh device. You will see the device dashboard showing relay states, input states, firmware version, and network information.

Step 4: Assign a static IP address

Navigate to Settings → Network in the web interface. Toggle the IP mode switch from DHCP to Static. Enter your desired IP address, subnet mask, gateway, and DNS server. Click Save and confirm the restart. The device will reboot and come up on the new static address within 30 seconds.

Example static network configuration:
IP Address  : 192.168.1.50
Subnet mask : 255.255.255.0
Gateway     : 192.168.1.1
DNS         : 8.8.8.8

Firewall and VLAN considerations

The RELO IO8 uses the following ports. Ensure these are open between the device and any computers running Cueva Desktop or sending protocol commands: