The Devantech ETH484-B - 4 x 16A Ethernet Relay is replacing the ETH484 and offers drop incompatibility with an upgraded 100MB Ethernet link (previously 10MB)
It also added MQTT, email, and a 12 bit ADC (previously 10 bit). All documented commands remain consistent between the two modules.
The only minor difference was a change to the example program, it used an undocumented UDP scan to find the module and required a minor tweak as Microchip changed the Ethernet stack method.
1 x Devantech ETH484-B - 4 x 16A Ethernet Relay
Relays: 4
Digital Switching I/O channels: 8
Analog Inputs: 4 x 3.3 V 12 bit or 10 bit for backward compatibility
Power: 12V DC adaptor, supplied separately.
Configuration & Test interface: HTTP (webpage)
Control interface: TCP/IP over Ethernet
Relay current: Up to 16 Amp at 24 VDC or 250 VAC
Connections: Screw Terminals for N/O N/C and Common contacts