Features: 1. LCD high-definition display, clearer, high-precision, fast display chip, clear, intuitive, durable. 2. HD backlight, clearly visible at night. 3. Triple reminder, out of the safe range, sound, light, and display alarm. 4. Comfortable grip, non-slip side design, small and lightweight 5. Detect the electromagnetic radiation of mobile phones, TVs, computers, drinking fountains, etc. to meet daily needs. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. 2. Objects may have Logo, if you want to know, please contact us. If you mind, please do not bid. Specification: Product name: Electromagnetic radiation detector Test mode: dual-mode simultaneous test Power supply:700mAh 3.7V rechargeable battery Test bandwidth: 5HZ-3500MHz Operating temperature: 0-50degC Overload prompt: LCD display maximum Operating humidity: humidity 80% Reading method: digital display Sampling time: about 0.4 seconds Size: 60*25*133mm Feature: Backlit LCD, triple alarm, 3.7V built-in 700mAh battery Application: Can detect electromagnetic radiation from mobile phones, TVs, computers, etc. Electric field/magnetic field: Unit: V/m (Volt/meter)/T (Micro Tesla) Accuracy: 1V/m/0.01T Range: 1V/m-1999V/m/0.01T-99.99T Alarm threshold: 40V/m/0.4uT includes: 1 x Electromagnetic Radiation Detector 1 x USB data cable 1 x manual 1 x color box