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Modbus Remote IO Module IOT Data Acquisition High Speed Pulse Counter Digital Input 8 Sink Output M160|output|output module - AliExpress
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Pulse Counter Frequency Data Module 32 bit 1MHz Digital input output encoder input RS485 Modbus ADAM DIN Rail|rs485 rj45|express ieeers485 picture - AliExpress
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4-way encoder pulse counter, 8-way DO, MODBUS TCP module [WJ96] - $59.00 : Wayjun Industrial Automation, 4-20mA to RS485|RS-485 to 0-5V|Pt100|0-10V|RS232|0-75mV|0-100mV|DC DC converter|Signal Isolator|Conditioner|Analog to Digital Converter|DC-DC
S0 Pulse Counter Counter with Modbus Interface | Meter Accessories | Metering Devices | Field Devices | Meter Accessories | Honeywell Building Solutions
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16 Digital Inputs RS485/232 Modbus RTU Stc-101 Remote Terminal Units - China Io Module, Pulse Counter | Made-in-China.com
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