RADEX RD1008 Radiation Detector



RADEX RD1008 - Radiation Detector/Monitor was designed for detecting ionizing radiation and estimating the ambient dose-equivalent values, as well as the ambient equivalent dose-rate of photon (gamma- and roentgen-) ionizing radiation and the beta-particles flux density.

This device uses two table sensors for detecting radiation (Beta-2 and Beta-2M).  While the cost of the device increased significantly due to the use of these sensors, they do allow this detector to detect and display radiation results for Beta- and Gamma- as two separate values.  This the first time that a small, hand-held device can accurately measure the presense of Beta- and Gamma- values in products.

While the accuracy of the measurements obtained using RD1008 is in no way high enough to satisfy the strictest requirements for food safety measurements of the US FDA, Japanese Ministry of Health and Russian Ministry of Health -- it is astonishing considering that this device weights only 175 g / 6.2 oz (compared to the typical 10 kg / 25 lbs and above for an equivalent).

Distinctive Features:

  • simultaneous and parallell evaluation of Gamma- and Beta-particles;
  • ability to accumulate dose for two users (acts as a dosimeter);
  • continuous evaluation with self-test and result correction;
  • automatic re-test/re-set in case of sudden change in dose-rate or radiation flux-density;
  • ability to show Background on display and excessof Background;
  • short measurement cycle;
  • measurement cycle decreases as the ambient radiation increases;
  • ability to track measurement cycles;
  • ability to change alarm thresholds for Beta- and Gamma-radiation;
  • ability to choose audio or vibration alarm;
  • callibration coefficient may be modified by the user.

Technical specifications

Scale range of ambient dose-rate equivalents


from 0.1 up to 999.0

Scale range of Beta- radiation energy


from 6 up to 999.0

Scale range of dose measurement (using dosimeter function)


from 0.001 up to 999.0

Scale range of energies:

   photon ionizing radiation


from 0.05 to 3.0



from 0.05 to 3.0

Random error with P=0.95 (reproducibility of the results):

   of dose rate , not more, where N is the dose rate in mcSv/h  



   of flux density, not more, where R is the flux density, 1/cm2* min



   of dose, not more



Aduio Alarm threshold levels:

   dose rate


from 0.20 to 1.20

   flux density


from 10 to 12

Measurement Cycle:

   dose rate


from 1 to 21(1)

   flow density


from 1 to 21 

Power Supply ("AA" battery)



Time of continuous operation

min hrs

950 (2)

Overall dimensions of the device

max mm


Weight (without batteries)



(1) Measurement cycle depends on ambient radiation. 

(2) At factory settings, with ambient radiation belo 0.3 µSv/h, and battery capacity of 1,300 mAh.


United States Delivery
Radiation Detector
(Geiger Counter) English

Singapore Delivery
Radiation Detector
(Geiger Counter) English

SE Asia & Australia Delivery
Radiation Detector
(Geiger Counter) English

RADEX 1503+ Replaces RADEX 1503

As of August 1st, 2013, Quarta-Rad upgraded RADEX 1503 to RADEX 1503 Plus. Upgraded firmware, additional features, and cost the same as  RADEX 1503. When you buy RADEX 1503 online, make sure it is RADEX 1503 Plus!

Online Demo

Global Distribution

  • USA - Distribution and Sales:
    Quarta-Rad, Inc.
    12-45 River Road PO Box 140
    Fair Lawn, NJ 07410
    Email: quarta-usa@quartarad.com

    Japan - Commercial Distribution:
    Star Systems KK
    7-10-3 Minami-Aoyama, Minato-ku
    Tokyo 107-0062
    Email: sales@starsystems.co.jp

    Singapore - Distribution:
    Quarta-Rad Holdings
    1 Fullerton Road #02-01
    One Fullerton, Singapore 049213
    Email: sales@quarta-rad.com.sg