Equipment Kit: You will receive 1 electromagnetic field meter and 2 motion activated balls; this combination helps meet your needs, adding functionality and convenience Accurate measurement: Built-in electromagnetic radiation detector, processed by the control system, displays radiation values on a clear LCD digital screen; measures magnetic field radiation (in MG/T) and electric field (in volts/meter); Note: This EMF meter cannot test RF values Multifunctional: The EMF detector features multiple functions including data hold, maximum value recording, simple touch data lock, manual or automatic power off, safety threshold setting, and sound and light alarm Sound and light alarm: When the EMF reading exceeds the set threshold (0.4T or 40V), the indicator light flashes, the screen turns red, and the buzzer sounds; for quiet environments, the buzzer can be turned off to avoid disturbance Wide range of applications: This EMF detector is compact and portable, operable with one hand. Suitable for radiation testing of computers, induction cookers, microwave ovens, rice cookers, refrigerators, mobile phone towers, printers, and other common household or office devices, helping to identify potential radiation exposure. Ideal for home safety checks and environmental assessments Power Supply: AAA 1.5V x 3pcs (batteries not included) Color: Black Material: Plastic Package Contents: 1 x EMF meter 2 x Light-up ball Only the above package content, other products are not included Note: Lighting and display differences may cause slight color variation between the image and the actual item. Measurement error allowance is +/- 1-3cm