Aten VE170RQ. Operating temperature range (T-T): 0 - 50 °C, Storage temperature range (T-T): -20 - 60 °C, Relative humidity: 0 - 80 %. Operating voltage: 5.3 V. Dimensions (WxDxH): 85.6 x 119.5 x 22.6 mm, Weight: 0.25 kg