EMF Meter: Evaluation function that can indicate whether the current value is at a safe level, EMF recorder Equipment: It can also be used to test the performance of shielding fabric, detector Dual-use measuring equipment: Simultaneous detection of electric and magnetic fields, electromotive force readers, digital detectors Electromagnetic field detector: When the electric and magnetic fields exceed the safe range, an audible and visual alarm will be issued. Electromagnetic: Can be used in computers, televisions, refrigerators and high voltage, electromotive force Feature Accuracy: 1v/m electromotive force meter Working voltage: 1. 5V AAA device (not included) Sampling time: About 0.4 seconds in digital Method of test: synchronous test strip. Reading display: 3-1/2-LCD unit Over-range indication: LCD displays "1" Material: ABS, electronic components Working relative humidity: <80% Color: black EMF recorder. The product does not contain batteries. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.