The improved version of BNS-97 is a highly sensitive gamma radiation meter and an alarm unit. Due to our patented invention the device measures radiation in a very wide range. BNS-97 is provided with the certification of the National Measurement Office of Hungary which is accredited by NAMAS (UK) for its use as authorized radiation protection device. The device alarms in case of significant increase of the radiation level both in short or long periods of time. The measured values appear locally on the LCD display of the device. BNS-97 alerts if the radiation level exceeds any of the three preset thresholds. The remote computer enables to create audible and visible alarm signals by parameter programming. In its basic configuration it is mounted with one single alarm unit, further alarm units are optional.