FNIRSI ERD-10 is a portable 4-in-1 electromagnetic radiation detector for daily EMF safety inspection. It simultaneously measures electric field, magnetic field, RF radiofrequency radiation and ambient temperature. The 2.4-inch adjustable-backlight color screen supports real-time trend curve display and dual light/dark UI themes. Users can customize alarm thresholds with sound, light and vibration triple alert modes. It features data hold, bilingual English/Chinese menu, auto power-off and firmware upgrade. Built-in 1000mAh rechargeable lithium battery with Type-C charging. Widely used for home appliance EMF checking, router/phone RF testing, office environment monitoring and personal electromagnetic exposure assessment.

• 4-in-1 multifunction: Electric field + Magnetic field + RF radiation + ambient temperature measurement
• Measurement ranges:
  • Electric field: 1~1999 V/m
  • Magnetic field: 0.01~99.99 μT (mG unit switchable)
  • RF power density: 0.2~1000 mW/cm²
• 2.4-inch color screen, adjustable brightness, real-time radiation trend curve
• Triple alarm: sound, light and vibration; customizable alarm thresholds
• Data hold function, easy to freeze and record readings
• English & Chinese switchable interface, simple keypad operation
• Built-in 1000mAh lithium battery, Type-C rechargeable
• Auto power-off setting (Off / 5 / 10 / 15 min) to save power
• Support firmware upgrade for function optimization
• Compact handheld design, ideal for household and office EMF safety screening