The 931S-V291 signal conditioner is a voltage measurement device by Allen-Bradley. It is part of the 931 signal conditioner series. This 931 series device is mainly used for precise application process measurement and control. It also acts as a safety mechanism to protect expensive industrial modules and devices. The converter device is able to convert voltage at up to 660 Volts DC or 440 Volts AC. The front panel is equipped with operational status indicators which show the running information and status of the converter. The converter is manufactured with emovable terminals with error proof keys. The 931S-V291 signal conditioner uses sinusoidal voltage with a frequency range between 40 and 60 Hertz. It works with a single-phase power supply and it uses passive input. For the input and output, it uses a single channel.  The signal conditioner is often used in chemical processing, steel production, and pharmaceutical industries. It is rated for hazardous areas and industries. It has been certified with the RCM, FM, and the CE standards.

The output current of the Allen-Bradley 931S-V291 signal conditioner ranges up to 20 milliamps. The load impedance for the current and voltage is less than or equal to 500 ohms and greater than or equal to 10 kiloohms, respectively. The converter has high galvanic isolation that is achieved by using a 3-way isolator. The voltage management converter provides optimal signal isolation, signal conversion, and signal amplification. The device can be mounted by using a DIN Rail mounting base. The 931S-V291 signal conditioner uses a wire size of AWG 30 to 14. The environmental temperature around the signal conditioner should be between -25 and 65 degrees Celsius for ideal operation and it should be between -40 and 85 degrees Celsius for safe storage.