Achieve highly sensitive radiation detection with few nuisance alarms with the RadEye PRD4 personal radiation detector. The RadEye PRD4 saves users valuable time adjudicating alarms while increasing scanning throughput. Using natural background rejection (NBR) technology, the RadEye PRD4 ignores fluctuations in naturally occuring radiation (NORM) while analyzing the engergy imbalance of artificial radiation. Large screen display with improved screen resolution and brightness. Requires 2xAAA batteries for > 170hr service, weighs 0.417lbs.