4-Channel Logic Level Converter 12V to 3.3V

The level converter from DFRobot converts four 12 V signals to 3.3 V with galvanic isolation via optocouplers. The inputs are designed for common anode, common cathode or differential signals, the output is PNP. This allows signals from a PLC or from NPN sensors to be read by a microcontroller. The module sits in a housing for DIN rail mounting.

According to DFRobot the supply of the module equals the output voltage, here VCC = 3.3 V.

For 5 V boards there is the 4-Channel Logic Level Converter 12V to 5V.

Features:

• 4 channels with optocoupler, galvanically isolated
• Input for common anode, common cathode or differential signal
• PNP output, also converts NPN to PNP signals
• Input level 12 V, output level 3.3 V
• Output current at most 50 mA per channel
• SMD LED indicator
• Housing for standard rail, screw holes 3 mm

Application Examples:

• PLC signals on Arduino, ESP32 or Raspberry Pi
• Inductive proximity switches and light barriers with 12 V
• NPN to PNP conversion and signal isolation

Documentation:

• DFRobot product page DFR0913 with wiring diagram

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0913
• Input: 4 channels with optocoupler
• Output: PNP (NPN to PNP possible)
• Sensor input voltage: 12 V
• Module supply: 3.3 V
• Input level: 12 V
• Output level: 3.3 V
• Output current: at most 50 mA per channel
• Indicator: SMD LED
• Bare board: 45 × 72 × 19 mm
• With housing: 47 × 87 × 39 mm
• Screw holes: 3 mm
• Mounting: housing for standard rail
• Weight: 74 g

Scope of Delivery:

• 1× 4-Channel Logic Level Converter 12V to 3.3V