The Z Technology R-507 Field Strength Meter is a United States-made device designed to measure the strength of electromagnetic fields. It is ideal for professionals in the fields of electrical engineering, industrial measurement, and radio frequency testing. This specific model from Z Technology is untested and being sold for parts or repair, making it a valuable resource for those looking to fix or refurbish similar field strength meters. Comes with a case and power cord that is NOT THE ORIGINAL POWER CORD (see pics) however it does power the unit on! Otherwise it is untested! Antenna is included ( see pics)