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 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