The DFI 250 is powered by Sigma-Delta A/D converter, ensuring fast and accurate weight readings. It may be configured via the keypad, through the RS232 port or through IR-Link with our PC software. A function key can be configured to select units of measure (kg, lb, g, & t) hold a weight reading, display an absolute peak weight, count parts or stabilize a moving mass i.e. livestock. To simplify operation, Key Disabling allows any or all keys to be disabled. The DFI 250 can be operated using an AC adaptor or four AA batteries that provide up to 38 hours of continuous operation.