Features BETTER TESTING This EMF detector can test electric fields, magnetic fields and temperatures, and has a large test range and high accuracy. Practical Applications Our radiation tester is perfect for home, office, outdoor and industrial sites, mobile phones, computers, TVs, refrigerators and so on. Clear in the alarm: with 0.4 seconds sampling time, the EMF meter with high sensitivity automatically sends sound and light alarm for safety reasons. EASY READING The digital display along with the data lock function allows for easy reading, which also greatly simplifies the operation. Easy to carry: with a light weight and compact size, the electromagnetic radiation tester is very convenient to carry. Specification: Item Type: EMF Detector Battery: 3 x AAA 800mAh alkaline dry battery, supplied with supporting battery. Electric field range: 1V/m~1999V/m, Unit: V/m, Accuracy: 1V/m, Alarm threshold: 40V/m Magnetic field range: 0.01μT~99.99μT, Unit: μT, Accuracy: 0.01μT, Alarm threshold: 0.4μT Temperature range: -10℃ ~ 70℃, Unit: ℃/℉, Accuracy: 0.1℃/℉. Reading display: 3-1/2-bit LCD Test bandwidth: 5M Hz - 3500M Hz. Sampling time: approx. 0.4 seconds. Test mode: simultaneous test in dual mode. Operating temperature: 0℃~50℃. Operating humidity: ≤ 80% relative humidity. Package list: 1 x EMF detector. 3 x batteries Package List 1 x EMF Detector 3 x Battery