1-channel data logger testoT3,with displ. incl. battery,insp.rep. stored on logger Contains LITHIUM-ION CELLS. Does not require labeling according to SV 188, ADR. For monitoring temperature-sensitive products. Model testo 184 T4 is specially for low temperatures (down to -80 °C). With alarm management: Adjustable min/max function and cumulative alarm The configuration file for logger programming is stored directly on the data logger (no software installation required) Automatic data output as PDF file via USB port Mobile readout via NFCTechnical specifications: Model ➀ testo 184 T3 ➁ testo 184 T4 Measuring range/resolution -35.0 to +70.0 °C -80.0 to +70.0 °C Accuracy±0.5 °C ±0.8 (-80.0 to -35.1) °C ±0.5 (-35.0 to +70.0) °C Sensor type NTC Pt 1000 Display yes no Measured values 40 000 Measuring cycle 1 min to 24 h Protection class IP 67 Dimensions (W x D x H) 44 x 12 x 97 mm Weight45 g Battery type 1 CR 2450 battery (3 V) 1 ER 2450 battery (3 V)Delivery incl. battery and inspection report stored on logger.