Allen - Bradley 1746 - A4 is usually a module of the SLC 500 series. Here are its brief parameter in English:
Model Number: 1746 - A4
Manufacturer: Allen - Bradley
Input Channel Count: 4
Common Mode Voltage Range: - 20 to 20 V
Absolute Input Voltage: ±7.5 VDC or 7.5 VAC rms (Maximum)
Input Range: - 10 to 10 VDC – 1 LSB
Absolute Input Current: - 30 to 30 mA (Maximum)
Voltage Rating (Overvoltage Protection): 7.5 VAC rms
Current Rating (Backplane Current Draw): 35 mA at 5 V, 85 mA at 24 V
Isolation: Backplane: 500 VDC, Enclosure: Open Type
Operating Temperature Range: - 20 °C to + 70 °C