Bimodule Synchronous Test -- EMF meters can test both radiations in electric field and magnetic field at the same time for precise result.
Sound & Light Alarm -- Radiation detectors will assess the test result and it will automatically alarm when it's over the safe value. Alarm Threshold: Electric: 40V/m; Magnetic: 0.4μT
Ecofriendly & Fashion -- USB rechargeable. Portable and simple design makes digital radiation testers are easy to carry around and do field measurement.
Data-Locking & Backlight -- Press one botton to lock the data and clear display with blue bakclight allow you to easily read results. Accuracy: 1V/m for Electric, 0.01μT for Magnetic.
Measure Temperature -- Swicthable temperature units (℃ and ℉). 0°C-50°C

Colour: black
Material: ABS plastic
Size: about 133 x 60 x 25mm

Package Contents:
1 x electromagnetic radiation detector
1 x USB cable
1 x English manual

Only the above package content, other products are not included.
Note: 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.