Buy 4-20mA to 5V Converter for Arduino Industrial Sensor Interface Board
Dc24v 4-20ma Current Signal Detection Control Relay Switch Set Upper And Lower Limit Alarm Module Rs485 Communication - Personal Care Appliance Parts - AliExpress
PT100 sensor 4-20mA Two-way relay Electronic Temperature Switch - China Temperature Controller, Temperature Transmitter | Made-in-China.com
4-20mA Controller range with LCD and user selectable scale
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4-20ma Display Meter With 4 Ways Relay And Dc24v Voltage Output Din Water Liquid Level Pressure Temperature .etc. Controller - Pressure Monitors - AliExpress
Solid State Relay 4-20mA Input Professional 120A Fast Switch Solid State Voltage Regulator Easy Installation with Insulated Housing for Induction Coil : Amazon.ca: Industrial & Scientific