Preset with 5 minute sample intervals, two different models are offered. Model 31011 has 2C/8C low/high alarms for refrigerated conditions, model 31012 has 15C/25C alarms for CRT products. This plug-and-play logger has the added benefit of Shadow Logtechnology, guaranteeing that receivers always get trip data, even if a shipper forgets to start the unit. This compact, single-use temperature recorder has a built-in USB connector and on-board software, making it ideal for export shipments. No added software needed. Measurement Range -40F to 188.6F (-40C TO 87C) Accuracy 1.0F from -4F to 14F (0.5C from -20C to -10C) 0.6F from 14F to 50F (0.4C from -10C to 5C) 1.0F from 50F to 77F (0.5C from 5C to 25C) 1.8F if < -4F or > 77F (1.0C if < -20C or > 25C) Factory Programmable Alarms High & Low levels Battery Coin Cell Battery Certification CE Mark, Calibration traceable to NIST, RoHS Compliant Display Green and Red LED IP54