Electromagnetic Radiation Tester 1V/M‑1999V/M LCD EMF Meter with Sound Light Alarm for Home Appliance Item Type: EMF Tester Material: ABS+Silicone Weight: Approx. 171g / 6oz Accuracy: 1V/m Range: 1V/m-1999V/m Alarm Threshold: 40V/m Reading Display: 3-1/2 digit LCD Test Bandwidth: 5Hz-3500MHz Sampling Time: ~0.4 Seconds Test Method: Dual Mode Synchronous Test Display Range: LCD displays "1" Display Temperature: 0℃~50℃ Temperature: Relative Temperature <80% Power Supply: 3 x AAA Batteries (Not Included) Function: Electric Field + Magnetic Field Measurement, Data Lock Function, Sound Light Alarm Function Detection of Radiation Protection Supplies: Radiation protection clothing, radiation protection World Health Organization Lists 5 Major Effects of Electromagnetic Radiation on Humans: 1. Electromagnetic radiation is the main cause of cardiovascular disease. 2. Diabetes and cancer mutations. 3. The damage of electromagnetic radiation to the human reproductive system, nervous system and immune system; electromagnetic radiation is a predisposing factor for pregnant women to miscarry, infertility and fetal abnormalities. 4. Electromagnetic radiation directly affects the development and skeletal development of children, resulting in decreased vision, retinal detachment and loss of liver hematopoietic function. 5. Electromagnetic radiation can reduce the physiological function of children