Specifications include, but are not limited to: Indicated Use: Designed for ease of transport, can be assembled or disassembled in less than five minutes, and includes a carrying case. Sensitivity: Must detect the beta gamma emissions from a 1 μCi 137Cs source when it is located at midframe of the portal monitor in a 10 μR/hr background (per the suggested standard in FEMA report "Contamination Monitoring Standard for a Portal Monitor Used for Emergency Response", Sept 1992). Energy Response: Energy dependent Body and Head Detectors 14 ea. GM pancake detectors (2 per channel); Active Area-Approximately 15.4 cm2 (2.4 in2) per detector Open Area-Approximately 12.2 cm2 (1.9 in2) per detector Window 1.7 ± 0.3 mg/cm2 mica Shoe Detectors: 4 ea. (2 per shoe) cylindrical GM detectors Wall Thickness: Approx 37 ± 7 mg/cm2 stainless steel Active Length: Approximately 22.9 cm (9 in.) Sensitivity: Approx 8800 cpm per mR/hr (137Cs) Display and Control Unit : Display LCD, 1 line x 16 characters Menu Controls: Should have Select, Save, Exit, Increment Value, Decrement Value LED Indicators Incomplete/Updating: Amber LED, indicates user stepped off portal before count was complete, or that a background update is in progress Low BAT/Trouble: Red LED, indicates a low battery or high/low background