Green Display Advanced Software Technology Over Load Indication High Brightness LED RS 232 (Optional) Low Battery Indication Battery Backup for 24* Hrs Heavy Duty Switches Capacity Accuracy Pan Size 1000 kg 100 g 1000 x 1000 mm 2000 kg 200 g 1200 x 1200 mm 3000 kg 500 g 1500 x 1500 mm