Multi Screen Display Function: Can adjust alarm threshold randomly, switch between Chinese and English, screen backlight, real-time dose rate curve, etc.Power mode: Giegermeter radiation detector has two power modes, which can be installed with 3 AAA batteries, or Type c power supply, button battery included: CR1220, and has dual alarm functions.Built in memory: Portable Geiger counter is built in memory, and some data such as accumulated dose value, dose alarm threshold and dose alarm threshold will not be lost after power failure.Function settings: Geiger anti-radiation detector can be set for sound, backlight, language, time and date, calibration factor, clear dose.Wide application: Nuclear radiation detector can be used in home improvement radiation detection, radiation processing enterprises, health and epidemic prevention, radiotherapy, nuclear laboratories and other scenarios.Specification: Item Type: Nuclear Radiation DetectorMaterial: ABSProduct size: Approx. 116 x 60 x 25 mm to 4.6 x 2.4 x 1.0 inchUSB: 5VLanguage: Chinese and EnglishMeasuring range: 0.1hSV/h-10mSV/hDose range: 0.00mSv to 10SvSensitivity: >1cps/sv/h (under Condition Co60 Source)Energy Reaction: 48keV-1.5MevRelative error: