Product Name: Personal dosimeters Model: FJ2000 brand: FJ 

 Specifications: 

 (1) Detector: GM counter (after compensation) 
 (2) Display: 4 digit LCD 
 (3) measuring range (two kinds of functions): 
 Cumulative dose equivalent: 0.0μSv ~ 99.99mSv 
 Dose equivalent rate: 0.1μSv / h ~ 99.99mSv / h 
 (4) Measurement time: <6.0μSv / h 36s> 6μSv / h ≤ 3.6s 
 (5) The dose equivalent rate response: ≤ ± 20% (1μSv / h ~ 99.99mSv / h) 
 (6) Energy response: ≤ ± 30% 50KeV ~ 1.3MeV 
 (7) relative error: <± 20% (137Cs) 
 (8) Alarm function: dose rate and cumulative dose in the measuring range can be preset alarm threshold. This instrument is equipped with a fixed alarm threshold. 
 Cumulative dose: each additional 0.1μSv, ring a short sound, light one; ≥ 50μSv, sound and light alarm 5s, with "ALARM" display. 
 Dose rate: ≥ 25μSv / h, sound and light alarm about 6s, with "ALARM" display. 
 Blocking alarm: When the counter counts obstruction, non-stop continuous warning, a "ALARM" display. Alarm sound level: 30cm at about at 80dB. 
 (9) Power consumption: AAA type 1.5V alkaline batteries two (7 cells) under the environment of this, power consumption <2mW, continuous use 720 hours.