Built-in temperature-sensing probe assists with outstanding temperature accuracy and controlDesigned for precise temperature controlFast heating rateMultiple combination of different size of blocks allows for maximum tube size versatility during experimental procedure12 V low voltage power inputModel S can hold 1 full block, 2 half blocks, 2 quarter blocks or 1 half Block and 2 quarter blocks.Model D can hold 2 full blocks, 4 half blocks, 8 quarter blocks or a combination of full/half and quarter blocks.Blocks are not included. Please order separately.Temperature RangeAmbient +2 °C ... 100 °CTemperature Accuracy at 37 °C≤ ± 0.5 °CTemperature stability at 37 °C≤ ± 0.5 °CHeating rate (30 °C to 100 °C, ambient at 25 °C, with one 0.2 ml block)16 min. // 20 min.Voltage100 ... 240 VElectrical Requirements12 V DC, 5 A // 12 V DC, 7 A