The Allen-Bradley 2706-B23C16 Dataliner DL20 message display module performs self-testing and diagnostics during power-on. The 2706-B23C16 also has autorun features. Messages can be configured and written manually by attaching an external keyboard or any extra terminal. The recommended operating temperature is 32-140 °F and the recommended storage temperature is -40-185 ° F. The acceptable relative humidity range for this module is 5-95% without condensation. The Allen-Bradley 2706-B23C16 has an operating shock of 30g (3 pulses, 11 ms). The nonoperating shock of this module is 50 g (3 pulses, 11 ms). This module has a battery with its own operating temperature range of 32-113 °F. Its 2-line Vacuum Fluorescent Display (VFD) screen can display a total of 20 characters per line. The 2706-B23C16 comes with 16KB of RAM, ASCII input, and RS-422 and RS-232 communication ports. It is protected by a NEMA Type 12/13 enclosure.

This module comes with a real-time clock that tells the current date and time. External devices like printers and alarms can be connected. The Allen-Bradley 2706-B23C16 is highly customizable. This module can also deliver alarms and messages in an industrial environment. The 2706-B23C16 has a removable battery. When installing, removing, or replacing the battery, be sure to remove the power first. For complete step-by-step instructions for removing, installing, or replacing the battery, consult the owner’s manual. Store the battery in a cool and dry place with a relative humidity of 40 – 60%.  Never store the battery at a temperature above 140 °F for more than 3 days to avoid the possibility of leakage.