The Model 2241 is variation of the Model 3. Added features are the digital readout and scaler function for general survey and gross counting with GM, proportional or scintillation detectors. Display range is auto ranging from 0.0 mR - 9999 mR, 0.000 mSv/h -9990 mSv/h; 0 cpm - 999k cpm; or 0 cps - 100 cps. The 2241 meter is supplied as shown with built-in speaker, strain relief cable, probe clip on handle, two “D’ batteries, and standard factory calibration. The 2241-2 meter includes a control for 2 HV settings. The 2241-3 meter includes a control for using different probes.