Feature: 1. Excellent Stainless Steel Material: This radiation detector is made of excellent stainless steel material for the shell, which has high erosion resistance. 2. Compact Size: This nuclear radiation detector is compact enough to be installed in a variety of places without taking up much space. 3. Wide Application: This nuclear radiation detector has a wide range of applications and can be used at home, hotels, offices, shopping malls and so on. 4. Accurate Testing: This radiation detector can collect polar equilibrium potential variations within the basic parameters at 40°C and 95% relative temperature and humidity. 5. Easy To Install: This nuclear radiation detector is easy to install and does not require complicated tools to install. Specification: Item Type: Nuclear Radiation Detector Material: Stainless Steel, Polyurethane Collector Electrode Equilibrium Potential 5.5±0.3 V Collector Pole Potential Varies with Smoke Concentration Dimming Rate: 1%/ft 0.6 V Dimming Rate: 4%/ft 2.2 V Insulator Leakage Current (Maximum): 0.5 pA Capacitance ( Between Collector Pole to Outer Shroud and to Source Base Pole): 6pF Ionization Source Characteristics and Radiation Safety Performance A high performance low activity Am 241 ionization source is installed in the ionization chamber. Ionization Source Activity 0.5μCi(18kBq)±10% 0.8μCi(30kBq)±10 Ionization Source Alpha Energy Spectrum Peak 4.5MeV±10% FWHM﹤0.7 MeV Safety Polarization Standard (GB4075≈ISO2919) C64444 Radiation dose rate at 25cm of the ionization chamber 0.03mGy/year (lower than the human population dose standard 1mGy value).. Package List: 1 x Nuclear Radiation Detector