The Allen-Bradley 1738-ACNR ArmorPoint ControlNet Adapter can support a maximum of 63 modules, 5 rack-optimized connections, and 25 direct connections. It has a backplane current output of 1.0 Amp (maximum), although this may be extended beyond 1 Amp with an Allen-Bradley 1738-EP24DC Backplane Extension Power Supply. The 1738-ACNR adapter gets a 24 Volts Input voltage rating; its inrush current is 6 Amps maximum for 10 milliseconds. Its ControlNet Communication Rate is 5 Megabits per second, and it receives an input voltage rating of 24 Volts, with a 10 to 28.8 Volts voltage range. This adapter has a maximum field-side power requirement of 24 Volts at 425 milliamps. There are LED indicators to allow the end-users to determine the adapter's status, with 1 green/red adapter status LED, 2 green/red ControlNet status LED, 1 green/red PointBus status LED, 1 green System Power LED, and 1 green Adapter Power LED.

General specifications on the 1738-ACNR adapter include the maximum power consumption of 10.2 Watts at 28.8 Volts as well as a maximum power dissipation of 5.0 Watts at 28.8 Volts. This adapter's maximum thermal dissipation is 16.9 British Thermal Units (BTU) per hour at 28.8 Volts voltage. It also has a Field Power Bus Nominal Voltage of 24 Volts, alongside a supply voltage range of 10 to 28.8 Volts and a supply current of 10 Amps (maximum). The operating temperature range that this adapter must be kept within is from  -4 to 140 degrees Fahrenheit, along with a storage temperature range between -40 and 185 degrees Fahrenheit. The relative humidity of this adapter's operating conditions should be between 5 and 95%, non-condensing. The 1738-ACNR adapter has a Group 1 Class A emissions rating that is compliant with CSPR 11. It has an enclosure type rating that meets IP 65, 66, and 67 standards (when marked).