Features Built‑In automatic damping function, that is, the buffer function, can prevent the needle from swinging too fast and causing damage. Uses sophisticated production technology, has excellent performance, and can be used for radio antenna radiation. Made of high‑quality materials, this RF signal level meter is sturdy, durable, not easily damaged, and has a long service life. This RF signal level meter can detect weak signals of mw level and detect suspicious electric wave signals. Suitable for detecting radio waves of 20mhz‑6.5ghz, and the sensitivity is very high and adjustable. Specification: Item Type: RF Signal Level Meter Material: ABS Use: for Radio Antenna Radiation Test Sensitivity: 0.1W Transmitter Range: 0.1-1 Meters 2W/5W Transmitter Range: 1-3 Meters 10W Transmitter Range: 2-5 Meters 50W Transmitter Range: 3-10 Meters Package List: 1 x RF Signal Level Meter 1 x Antenna Package List 1 x RF Signal Level Meter 1 x Antenna