GMB- Housing, 8 Opto-In, 4 Relay
Housing Mini BLOCK Module witch
8 Opto-In and 4 Relay Outputs; Serial Line RS232
or TTL, RS422/485, Current Loop; 1 Serial Line USB
or CAN; Power Supply. 
GMB - Housing, 16 Opto-In, 8 Relay
Housing Mini BLOCK Module witch
16 Opto-In and 8 Relay Outputs; 2 Serial Line RS232
or TTL; 1 Serial Line RS422, RS485, Current Loop; 1 Serial Line
USB or CAN;
Power Supply.
GMB - Housing, 24 Opto-In, 16 Relay
Mini BLOCK Module witch 24
Opto-In and 16 Relay Outputs; 2 Serial Line RS232 or TTL;
1 Serial Line RS422, RS485, Current Loop; 1 Serial Line USB or CAN;
Power Supply.
