The HoldPeak HP-886A is a compact, high-sensitivity radiation detector designed to monitor real-time exposure to ionizing radiation such as X, β, and γ rays. Equipped with an energy-compensated GM tube and multiple alarm modes, it provides accurate dose measurements, waveform monitoring, and customizable thresholds. Its intuitive interface and portability make it ideal for use in professional and personal environments where radiation exposure is a concern. Main Features Detects X-ray, γ-ray, and β-ray radiation with high sensitivity Geiger-Muller (GM) tube Real-time dose rate display with 5 switchable units: μSv/h, μGy/h, mR/h, CPS, CPM Built-in 1100mAh rechargeable lithium battery with alarm modes (sound, light, vibration) Multifunctional LCD screen with English/Chinese language switch Widely applicable: medical, industrial, household, geological, and environmental use Specifications / Model Details Model Number: HP-886A Sensor: Energy Compensation GM Tube (Geiger-Muller) Detected Rays: X-ray, γ-ray, β-ray Dose Rate Range: 0.00–1000 μSv/h (10 mSv/h) Cumulative Dose: 0.00 μSv–500.0 mSv Energy Range: 48 keV–1.5 MeV (≤±30% for 137Cs) Sensitivity: 80 CPM/μSv (for Co-60) Units: μSv/h, μGy/h, mR/h, CPS, CPM (switchable) Display: LCD Languages: English / Chinese Battery: 1100mAh rechargeable lithium battery Alarm Modes: Sound, Light, Vibration Material: ABS + Silicone Package Includes: 1 × Detector, 1 × Cable, 1 × Manual