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Specification: 1. Battery: 2*9V type: 6F22, S006P or equivalent 2. Operating Current: (1). Standby ~30MA, (2). MAX~ 60MA 3. Operating Voltage Range: 7.1~9.6V 4. Operating Frequency: 7.5KHz +/- 1KHz 5. Sensitivity: Min. 13cm 6. Audio Frequency: 262Hz(do), 294Hz(re), 330Hz(me), 349Hz(fa), 392Hz(so), 440Hz(la), 494Hz(ti),523Hz(do) 7. Temperature Range: -20 ~60 8. Size: 550 mm(L)* 355mm(W)* 153mm(H) 9. Gross Weight: 3 KG 10. Net Weight: 1.37KG
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