The GE Fanuc IC660HHM501 Hand-held Monitor (HHM) serves as a versatile interface operating device designed for the setup, monitoring, and configuration of Genius I/O and communication systems. This portable device features a four-line LCD display capable of presenting 16 characters per line, which facilitates language selection in English, Spanish, French, and Italian. The HHM is equipped with a 20-key sealed membrane keypad and a keyswitch that restricts access to certain device functions, ensuring operational security. A key capability of the IC660HHM501 is its ability to communicate directly with I/O blocks, enabling users to force discrete and analog I/O operations independently from a PLC or computer. The device offers comprehensive display capabilities, showcasing I/O data, memory data from CPUs, global data addresses, bus scan time, diagnostics, and detailed descriptions of all devices on the Genius bus. The monitor operates on either a battery pack or AC power, requiring 115/230 VAC at ±15% and 47-63 Hz for the battery charger; however, a battery pack must always be installed, with a full charge achieved in approximately six hours. To conserve battery life, the HHM includes an automatic shutoff feature that activates after 10 minutes of inactivity, although this can be disabled for continuous operation. Weighing 1.6 lbs., the monitor measures 8.00” x 3.75” x 1.25". When stored in its protective case, its weight increases to 1.8 lbs., and its dimensions expand to 10.85” x 4.30” x 2.25”. The HHM can also be permanently mounted using a panel mounting kit, which requires access to 115 or 230 VAC power. It operates within a temperature range of 0 to 60°C (32 to 140°F) and can be stored at temperatures from -40 to 70°C (-40 to 158°F), with a non-condensing humidity tolerance of 5 to 95 percent.