4-Channel Level Converter (12V to 3.3V)

This 4-channel optocoupler level converter safely shifts 12V industrial signal voltages down to 3.3V logic levels with electrical isolation. It is ideal for makers, students, and engineers who need to interface 12V sensors, encoders, or PLCs with 3.3V microcontroller boards. The board supports common anode, common cathode, and differential inputs for broad hardware compatibility.

Four-channel optocoupler isolation

The converter uses four independent photoelectric channels to shield sensitive 3.3V development boards from voltage spikes and industrial electrical noise. It provides reliable signal translation from 12V inputs down to 3.3V logic.

Flexible signal and polarity conversion

The module accepts common anode, common cathode, and differential signal inputs. It delivers a 3.3V PNP output with up to 50mA of current per channel, making it suitable for NPN-to-PNP and polarity conversion tasks.

Onboard channel status indicators

Each channel includes an integrated SMD LED indicator to provide real-time visual feedback of active signal lines. This simplifies wiring verification and system diagnostics during development.

Standard rail mounting enclosure

Supplied with a protective outer shell measuring 47 by 87 by 39mm, the unit fits directly onto standard industrial rails. It also features 3mm screw holes for secure panel or chassis mounting.