YMWLKJ BR-6 Geiger Counter Dosimeter Review

YMWLKJ BR-6 Nuclear Radiation Detector This radiation detector, or Geiger Counter, is widely available under a range of different brand names and prices. This one cost me £48 but I have seen identical models priced from £43 to well over £100. Most of them are exactly the same but I have seen a few variants out there with built-in rechargeable batteries and kickstand. For those that need to know, here are the key technical specifications for this device: Specifications Model BR-6 v3 Size: 135 x 70 x 40 mm Weight: 169g Material: ABS Power x2 AA Batteries/ USB Energy Range: 20kev-3.0Mev≤±30%（137Cs-) Sensitivity: 80cpm / usv / (Co-60) Test Accuracy: 0.01μsv / h Time Range: 0-99.99µsv / h Time Error: less than 10% Average Error: Less than 3% Type of Detection: β γ and X Rays Build quality is OK but being made from ABS plastic and not being waterproof will limit how you use it outdoors. One thing I do like about the design is that the casing grill takes in air from three sides hopefully allowing for a more accurate reading from the Geiger-Muller tube inside. The unit is powered by two AA batteries but it can be powered from a Micro-USB port on the side, although this does not charge the batteries inside, so unplug them when in USB mode. The manual claims the device can detect β γ and X Rays in an energy range of 20kev-3.0Mev≤±30%（137Cs- with a sensitivity of 80cpm / usv / (Co-60) - whatever that means! The detector measures in microsieverts per hour and maxes out at...