Wireless Earphone for covert communication
This is the smallest size wireless receiver designed completely ac-cording to human ear canal. I t composes a covert signal tran-sfers and receiver system with the elec-tromagnetic wave inductive loop, highly-sensitive microphone, wire-less PTT or wired PTT. The voice signal is transmitted from the two-way radio via the induc-tive loop, to the needle-like antenna on the mini-earphone. There is no wire between the earphone and the transducer.
Earphone Technical Specification
Item Index Unit
Min typical Max
Sensitivity 200Hz 98.5 101.5 104.5 dB
500Hz 99 102 105 dB
1000Hz 101 104 107 dB
Output Voice 110 115 119 dB
Impedance＠1000Hz 246 330 369 Ω
Direct current impedance＠ 137 161 185 Ω
Storage environment -40 63 ℃
Dimension 5*10*15 mm
Battery use time 50 h
Weight 1.3 g
Earphone Technical Specification
Item Index Unit
Min typical Max
Sensitivity 200Hz 98.5 101.5 104.5 dB
500Hz 99 102 105 dB
1000Hz 101 104 107 dB
Output Voice 110 115 119 dB
Impedance＠1000Hz 246 330 369 Ω
Direct current impedance＠ 137 161 185 Ω
Storage environment -40 63 ℃
Dimension 5*10*15 mm
Battery use time 50 h
Weight 1.3 g
Added: 31.03.2008 Offer viewed: 148 (hits)| Member Information | |
| Sold by: | janelin |
| Phone: | 86-013424350967 |
| Company name: | shenzhen sy TD.co.,ltd. |
| Location: | China |
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