Feature 1Dual Use: This detector can be used for two purposes, simultaneously detecting electric field and magnetic field radiation. 2LCD Color Display: Comes with a color LCD display, this detector can display the radiation value trend graphically. 3Alarm Function: This detector has a sound and light alarm, which is very sensitive, it will automatically alarm when exceeding the safety value. 4One Key Data Lock: The detector features data locking and one key radiation value locking, which is more convenient for reading. 5Portable: Comes with a small size and lightweight as well, you can easily take this detector with you to help with your work. It can be operated with one hand, which is very convenient!Item Type: Radiation DetectorMaterial: ABSBattery: 1 x 3.7V 600mAh 103450 polymer lithium battery (Shipped with built in battery)Electric Field:Unit of Measurement: V/mAccuracy: 1V/mRange: 1 to 1999V/mAlarm Threshold: 40V/mMagnetic Field:Unit of Measurement: T/mGAccuracy: 0.01T/0.1mGRange: 0.01 to 99.99T/0.1 to 999.9mGAlarm Threshold: 0.4T/4mGReading Display: 3-1/2 bit LCDTest Bandwidth: 5Hz to 3500MHzSampling Time: About 0.4 secondsTest Mode: Dual mode simultaneous measurementOverload Prompt: LCD display range maximumOperating Temperature: 0 to 50Operating Humidity: Relative humidity below 80%Working Voltage: 3.7V . Package List1 x Radiation Detector1 x Manual1 x Charging Cable