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Indicated Use: Gamma survey
Detector: Energy-compensated GM tube
Range: 0 to 20 mSv/h (0 to 2 R/hr)
Sensitivity (137Cs gamma): Typically 100 cpm per mR/hr
Energy Response: Reading with 20% of true value
Meter Dial: 0 - 20 mR/hr (others available); BAT OK
Multipliers: x1, x10, and x100
Response Time: Typically 11 s from 10% to 90% of final reading
Alarm: May be set from zero to full scale meter deflection, detected radiation in excess of alarm setpoint triggers a red Alarm LED and steady audible tone whether in NORMAL or QUIET operating mode
Audio: Click-per-event, may be turned off by moving selector to QUIET position
Power: 9 volt battery
Battery Life: Typically 250 hours with alkaline battery at normal background levels
Construction: Drawn and cast aluminum, with membrane panel
Size (H x W x L): 4.6 x 8.4 x 13.5 cm (1.8 x 3.3 x 5.3 in.)
Weight: 0.4 kg (0.9 lb), including battery
