Description : Ambient temperature and relative humidity recorder (1 or 2 channels) Measurement range: -30 +70°C and 0 to 100% RH Measurement precision : T°: ±0,4°C from -20 to +30°C and ±0,5°C out of this range. RH (repeatability, linearity, hysteresis): ±2% at 23°C from 10 to 90% HR and from ±3,5% out of this range** Resolution: 0.1°C Type of sensor: internal temperature and hygrometry Protection index: IP 34 Internal memory: 20 000 measurements Long-range radio: 1 km with open field Flexible recording interval (1s to 90 min) Battery life: 2 years interchangeable Conformities: ROHS, CE, FCC, ETS 300-220 Supplied with wall-mouting bracket Benefits : Fast response time during measuement variations Integrated sensor protection * Accuracy is set in laboratories conditions and valid in these using conditions