Model OV-9023A OV-9053A OV-9073A OV-9123A working dimension mm 300 × 300 × 275 415 × 375 × 345 450 × 350 × 450 550 × 370 × 520 power 500W 1000W 1200W 1500W Power 220V 50Hz / 110V 60Hz Temperature range RT + 10-200 ℃ RT + 10-200 ℃ RT + 10-200 ℃ RT + 10-200 ℃ temperature accuracy of 0.1 ℃ 0.1 ℃ 0.1 ℃ 0.1 ℃ temperature fluctuation ± 1 ℃ ± 1 ℃ ± 1 ℃ ± 1 ℃ Packaging size cm 60 × 53 × 73 74 × 60 × 79 76 × 57 × 91 78 × 77 × 98 Gross weight kg 36 53 61 78 Weight kg 28 40 46 57 with invisible lock, silent fan with mechanical over-temperature protection, with leakage protection