External connectors

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10-pin terminal connector "screw - type" - power, relays, RS-485

Pins assignment (from left to right):

1. Common24V

2. "+" line of 24В

3. Isolated gnd for LAN/WAN cable shields

4. Relay #1 N.O.

5. Common wire for relays #1,2

6. Relay #2 N.O.

7. N.C.

8 RS-485 signal ground

9 Data- (:B) RS-485

10 Data+ (:A) RS-485

Connection of RS-485 - refer to this.

Switching capacity for SSRs - max. current 100мА ~/=, max. voltage - up to 350V.

When using shielded Ethernet cable its shield will connect to GND terminal, which in his turn recommended to wire to ground for better noise protection.

Voltage input 24В +/- 10% (15%).

Connection of external WiFi antenna (RP-SMA type)

USB - to connect extra devices like USB-serial adapters, modems etc. (ver. 2.0 USB).
Ethernet connectors LAN и WAN - see more here.