Best 4-20mA Signal Converter Solutions for Industrial Applications
Industrial control systems rely on precise signal conversion to bridge current loop signals (4-20 mA) and voltage-based monitoring. This article highlights five reliable 4-20mA signal converter solutions, covering end-to-end current-to-voltage, voltage-to-current, and isolation-enabled modules. Each option emphasizes stability, wide supply ranges, and compatibility with microcontrollers and PLCs. Use the buying guide below to compare features such as input/output ranges, accuracy, power consumption, and isolation capabilities.
| Product | Brand | Key Features | Representative Output |
|---|---|---|---|
| Acxico 4Pcs Current To Voltage Converter Module | Acxico | 4-20mA to 0-3.3/0-5/0-10V; wide supply; adjustable zero/full; high-precision resistor | 0-3.3V / 0-5V / 0-10V |
| NOYITO Voltage To Current Module | NOYITO | 0-10V to 4-20mA; linear output; small form factor; direct MCU compatibility | 4-20mA |
| Ximimark 2Pcs Current To Voltage Converter | Ximimark | 4-20mA to 0-3.3/0-5/0-10V; wide supply; adjustable ranges | 0-3.3/0-5/0-10V |
| NOYITO Current To Voltage Converter | NOYITO | 4-20mA/0-20mA input; 0-3.3/0-5/0-10V output; high-precision resistor | 0-3.3/0-5/0-10V |
| GODIYMODULES 2PCS Current To Voltage Module | GODIYMODULES | Wide supply; multiple output ranges; high-precision sampling resistor | 0-3.3/0-5/0-10V |
Acxico Current To Voltage Converter Module
The Acxico module is designed for the end of current signal transmission and converts 4-20mA (also supports 0-20mA) into voltages of 0-3.3V, 0-5V, or 0-10V. It features a wide supply range, adjustable zero and full-scale output, and a high-precision current sampling resistor with low temperature drift. The design emphasizes strong signal integrity, as current transmission helps preserve signal strength over distance. Suitable for detection by microcontrollers, these boards present an industrial-grade solution with good stability and linearity.
NOYITO Voltage To Current Module
This NOYITO module converts a 0-10V voltage signal into a 4-20mA current output. It enables users to generate signal sources, adjust control loops, and debug PLCs or instrumentation tests. The module adheres to standard voltage-to-current conversion and is designed for direct connection to AD converters and microcontrollers. Its compact form factor makes it suitable for integration into various control and automation setups.
Ximimark Current To Voltage Converter
Ximimark’s converter handles 4-20mA input with options for 0-3.3V, 0-5V, or 0-10V outputs. It emphasizes signal integrity across transmission distances where voltage signals may weaken, using the current loop to preserve signal strength. The module supports a wide supply range and offers adjustable zero and full-scale settings, making it suitable for microcontroller and PLC interfacing.
GODIYMODULES Current To Voltage Module
The GODIYMODULES module features a wide input voltage range and supports multiple output voltage ranges with automatic zero and full-scale adjustments. Its design uses a high-precision sampling resistor to deliver accurate current-to-voltage conversion with stable performance across temperatures, making it suitable for industrial measurement and control tasks that require reliable analog signals.
NOYITO Current To Voltage Converter
NOYITO’s current-to-voltage converter handles 4-20mA or 0-20mA inputs with selectable outputs of 0-3.3V, 0-5V, or 0-10V. The device emphasizes accuracy via a high-precision color-ring resistor, minimizing temperature drift and preserving signal strength over distance when converting current to volt, thus enabling reliable microcontroller or ADC readings in instrumentation and automation contexts.
Signal Isolator DC 24V (Nodehawk)
This signal isolator provides input/output isolation to mitigate electromagnetic interference and noise in signal transmission. It supports 24V DC operation and offers a compact form factor with a standard guide rail fit for dense installations. Key specifications include a 1W power draw, fast response time, and robust dielectric strength, making it suitable for protecting control circuits in industrial environments.
Nodehawk Signal Isolator (One In, One Out)
Another Nodehawk isolator option, featuring a single input and single output configuration with 24V DC supply. It provides isolation to reduce interference and maintain signal integrity, suitable for PLC/SCADA interfaces and compact installations requiring dependable isolation between measurement and control electronics.
Buying Guide: Key Purchase Considerations
- Input and output ranges: Ensure the module matches your system’s current loop (4-20 mA) and desired voltage outputs (0-3.3V, 0-5V, 0-10V). Some modules also support 0-20 mA inputs for added flexibility.
- Isolation and protection: If placing the converter near noisy equipment, select models with signal isolation and robust dielectric strength to protect controllers and sensors.
- Power supply requirements: Check the supply voltage range and whether the module requires a dedicated supply or can run from a shared system rail (e.g., 10–36V DC). Verify power consumption for scale and heat considerations.
- Accuracy and temperature drift: Look for high-precision sampling resistors and low temperature drift to maintain stable readings across operating conditions.
- Zero and full-scale adjustment: Adjustable endpoints allow calibration to match sensor outputs and ADC references, ensuring compatibility with existing control systems.
- Form factor and mounting: Consider size, rail compatibility, and whether multiple channels are needed. Dense installations benefit from compact, rail-mounted designs.
- Output compatibility: Confirm that the converter’s voltage outputs integrate cleanly with your ADCs, PLC analog inputs, or microcontroller analog pins.
- Cost vs. features: Weigh the value of isolation, multi-range outputs, and high-precision components against price, especially for large-scale deployments.