The ETH484-B is a drop in update of the ETH484 with additional upgrades.

There are four volt free contact relay outputs with a current rating of up to 16Amp each, 8 digital I/O and 4 analogue inputs. The module is powered from a 12vdc supply which can be regulated or unregulated. The DC input jack is 2.1mm with positive core polarity, DC supplies are required to supply at least 500mA at 12vdc. The relays are SPCO (Single Pole Change Over) types. The normally open, normally closed and common pins are all available on the screw terminals.

New features and improvements over the ETH484 are:

• 100mb full duplex Ethernet connection (ETH484 was 10mb half duplex)
• Hostname is now configurable
• MQTT with optional TLS encryption
• Email added with optional TLS encryption
• 12bit analogue converter scaled over 5v, but old commands still return 10 bit results scaled to 3.3v for compatibility