WiFi Serial Modbus Gateway with Modbus Digital I/O
PM822D

1 x RS232, 1 x RS422/485, 2 x DI, 2 x DO, Http/CGI commands, Ethernet, WiFi
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WiFi Digital I/O Modbus Gateway
EM130WBD

2 x DI, 4 x DO, WiFi (more…)

Serial Device Server with Digital I/O
SE731D

1 x RS232, 1 x RS422/485, 8 x DI, 3 x DO (more…)

Digital I/O Modbus Gateway
PM330D84

1 x RS422/485, 8 x DI, 4 x DO
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Analog Input & RTU to Modbus TCP
AM141

2 x 4~20mA + 2 x 0~10V
Or 4 x 4~20mA
Or 4 x 0~10V
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Analog Input to Modbus RTU Gateway
AM140

2 x 4~20mA + 2 x 0~10V
Or 4 x 4~20mA
Or 4 x 0~10V (more…)