Students' Listening Language Lab Headset headphone headphone audio headset FM radio headset students

The machine is the FM band and two audio headset, it has a digital display for easy frequency adjustment students. In principle, the campus FM reception band FM1, FM2 national local radio station. AF band AF can be used when the audio reception band, unified national college entrance examination or foreign language listening tests. Technical parameters: 1, frequency range: Audio (AF): 100Hz ~ 4000Hz FM1 (school table): 60 ~ 88MHz FM2: 88 ~ 110MHz Sensitivity: not inferior to 5μV 3, SNR ≥34dB 4, the power supply voltage DC3V (two Section 7 # batteries)