This is a fixed ionizing radiation measurement device for ambient dosimetry. The sensor is calibrated to calculate the ambient dose equivalent rate H*(10). The dosimeter plugs into a 220V power supply and transmits data by WiFi, 4G or Ethernet. Real-time ambient radiation dose monitoring is provided on the RiumApp web platform. This system is an effective alternative to passive dosimeters and fixed dosimeters as it allows area-by-area rather than individual monitoring.