Schneider Electric Hour Counter, 5 digits, Rotary Digit, 120 V ac. Count Capacity: 9999.9 h. Reset Method: No Reset. Count Direction: Up. Display Range: 0 → 9999.9. Weight: 45g. Maximum Operating Temperature: +70°C. Minimum Operating Temperature: -25°C. Series: Harmony XB5. Measurement Range: 0 → 9999.9. Mounting Type: Flush Mount. MPN: XB5DSG