the equipment set consists of an electromagnetic radiation detector, 1 brass divining rod, 1 metal pendulum and 2 motion activated cat balls; The quantity is sufficient, and the functions are complete; This combination can easily meet your needs, adding more suspense and fun for your activities the dowsing pendulum is mainly made of quality alloy material and the dowsing rod is made of brass material, strong and wear , not easy to deform, can you for a long time; Our divination rod can search by holding the handle, and the pendulum is also very helpful and useful to you, suitable for amateurs, novices and experienced tests electric field in volt/meter, ranging from 1-1999V/Meter, with a resolution of 1 volt/meter, and tests ambient temperature in degrees Celsius/degrees Fahrenheit, ranging 0-50 degrees Celsius/ 32-122 degrees Fahrenheit; Large size backlit LCD screen is easy to read and provide accurate measurement results even in the dark motion balls are made of PC material, which can emit bright flashes, these cat balls are designed with flashing, after pressing the button, they emit strong light and keep flashing the emf reader is small and portable, can be operated with one hand, suitable for testing the radiation of low frequency household appliances such as , computers, induction cookers, cell phone towers, printers, etc., Color: As Shown Material: ABS Package Contents: 1*set emf detector 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.