*High brightness display: 1~999999.
*High stability, non-flammable case (PC), high safety.
*Reset by external control terminal available.
*A/A-1/A-2/A-3/B/B-1/D/E/Z/TON/TOFF/F-1relay output mode selectable.
*2 alarms programmable / RS-485 communication optional (The above option can exist together).