Product Highlights Three levels of password protection Gate function for rate display of slow pulse rates Rate displayed as units per second, minute, hour, or day K-factor calibration or scale with up to 32-point linearization Total, grand total or non-re-settable grand total Two or four relays & isolated 4 to 20 mA output options External 4-relay & digital I/O expansion modules RS-232, RS-422/485 serial communication options 12-24 VDC, 4 relays, 4-20 mA transmitter 85-265 VAC, no relays, 4-20 mA transmitter