MetBaro: pressure sensor with a 1015 hPa limit (100 g) MetHumi: humidity sensor (15 g) MetTemp: temperature sensor with a range from -110 °C to +30 °C (2 g) Panoramic camera with four lenses mounted at 90° intervals (100 g) MetSIS: a solar radiance sensor with an optical wireless communications system for data transfer[20] Dust Sensor: an infrared dust and gas detector (42 g)[21]