The 1734-OB2 point I/O digital output module by Allen-Bradley is an output module with two current sourcing and isolated outputs and a 10 Volts DC ON-state voltage which peaks at 28.8 Volts DC. It has an ON-state current of 1.0 mA with a drop voltage of 0.2 Volts DC. The 1734-OB2 has an output OFF voltage of 28.8 Volts DC with a leakage current 0.5 mA and an output signal delay time of 0.1 milliseconds through ON/OFF and OFF/ON. The 1734-OB2 has a maximum output current of 1.0 Amps per output, which peaks at 2.0 Amps per module, and a surge current of 2.0 Amps for 10 milliseconds repeatable every 3 seconds with a POINT BUS current of 75 mA at 5 Volts DC.

The 1734-OB2 module has an isolation voltage of 50 Volts (continuous) with reinforced insulation tested at 2500 Volts DC for 60 seconds between field-side and system, and support an external power supply with a maximum voltage of 28.8 Volts DC. The 1734-OB2 displays module status to users via 2 yellow indicators displaying output status, and 2 green/red indicators for the module and network status. The module has a power dissipation of 0.2W and a thermal dissipation of 2.7 BTU/hour, with an open-style enclosure fitted for its T4 designated temperature code. It has an operational temperature range of -20 to 55 degrees Celsius (-4 to 131 degrees Fahrenheit), at 5 to 95% non-condensing relative humidity, and it will maintain a 30G operational shock rate. The 1734-OB2 has dimensions of 56.0 x 12.0 x 75.5 millimeters (2.21 x 0.47 x 2.97 inches) and it weighs 0.023 kilograms.