These digital dry baths utilize a PID microprocessor controller with digital temperature set and easy-to-read LED display for accurate and reproducible temperature control. Set point is easily adjusted by using up and down arrow keys located on the front of the unit. Modular block mounts on a single temperature probe in the bottom of the dri-bath providing better temperature accuracy and control. Temperature control at 37°C: ±0.1 to 0.2°C. Temperature uniformity at 37°C: ±0.1 to 0.4°C. Dri-baths hold one to six interchangeable modular blocks to accommodate a variety of vessels. Modular blocks sold separately. Use Lab-Line brand blocks only (See H1205). Powder-coated steel body construction ensures durability. 120V.