1. The electromagnetic radiation tester successfully tests the compatibility of electric field radiation and magnetic field radiation, and achieves the best test results 2. Test and understand the current status of electromagnetic radiation in indoor and outdoor environments 3 The product has a built-in electromagnetic radiation sensor, which is processed by a microcontroller chip. 4. LCD digital display radiation value 5. Reasonably handle or effectively avoid electromagnetic radiation according to the test results of electromagnetic wave health standards<br><br>Reading display: 3-1/2 digit LCD display Test frequency bandwidth: 5Hz-3500MHz Sampling time: about 0.4 seconds Working temperature: 0℃~50℃ Working humidity: relative humidity less than 80% Working voltage: DC4.5V Power supply: AAA1.5V*3pcs (not included) Dimensions: 152 x 52 x 26.5mm Material: plastic colour: black<br><br>Package Contents: 1 x Radiation Dosimeter<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.