DFRobot
4-Channel Level Converter (12V to 3.3V)
This DFRobot 4-channel optocoupler-isolated level converter translates 12V signals down to 3.3V, making it easy to interface industrial sensors and PLC outpu...
This DFRobot 4-channel optocoupler-isolated level converter translates 12V signals down to 3.3V, making it easy to interface industrial sensors and PLC outputs with Arduino, Raspberry Pi, and other 3.3V microcontrollers. Each channel features photoelectric isolation for reliable signal separation between high and low-voltage circuits.
The module supports common anode, common cathode, and differential signal inputs with PNP output (NPN-to-PNP conversion available). It mounts on standard DIN rails via the included enclosure, making it suitable for panel installations in industrial and automation environments.
Key Features
- 4-Channel Optocoupler Isolation – Photoelectric isolation between input and output for noise-free signal conversion
- 12V to 3.3V Level Shifting – Converts 12V input signals to 3.3V output levels
- PNP Output – NPN-to-PNP signal conversion available
- Multiple Input Modes – Supports common anode, common cathode, and differential signal inputs
- LED Indicators – SMD LEDs show signal status on each channel
- DIN Rail Mounting – Enclosed in a protective shell that fits standard DIN rails
Specifications
- Input Channels – 4
- Isolation Type – Optocoupler
- Input Signal Level – 12V
- Output Signal Level – 3.3V
- Module Supply Voltage – 3.3V
- Output Current – ≤50mA per channel
- Bare Board Dimensions – 45 × 72 × 19mm
- Dimensions with Enclosure – 47 × 87 × 39mm
- Mounting Hole – 3mm
Ideal For
- Interfacing 12V industrial sensors with 3.3V microcontrollers
- PLC signal level conversion
- NPN-to-PNP signal conversion
- Signal isolation between circuits
- Polarity and voltage level conversion
Package Contents
- 1× 4-Channel Level Converter (12V to 3.3V) with enclosure
Jargon buster
Plain-language definitions for the technical terms used above.
- differential signal
- A measurement taken between two input wires rather than between one wire and ground. This matters for precision sensors because it can reduce noise and lets the ADC read very small voltage differences more accurately.
- DIN
- DIN means data in, the pin where this display receives data from the controller. Connecting DIN to the correct SPI data output pin is needed for the screen to receive pixel and command information.
- DIN rail
- DIN rail is a standard metal mounting rail used inside industrial electrical cabinets. DIN rail mounting matters because it lets the controller be installed neatly alongside power supplies, relays, and other automation hardware.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
Find this product in
Brands
Prototyping & Wiring
Supplier page — dfrobot.com
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