HOD HEALTH AND HOME Australia has been operating online and instore for 8 years. All products come with a 1 year warranty, fast shipping and special offers added to our site daily.. Need more than 1? Get a bulk buy discount up to 20% off Features: *Using High-Fidelity/Low Noise Processing Chips With Low Noise Performance And Provide Pure Tone Quality And Powerful Movements. *It Is Suitable For Different Types Of Mic Supervised Listening EnvironmentsSuch As BankPrisonExamination PlacesShopping Mall And Industry FactoryMarketplaceFactory And Meeting SystemEtc. *Strong Points:Low NoiseWide Range Operation VoltageSmall Electricity ConsumptionLong Distance Transmission. *The Sound Pickup Is The Best Choice To Be Used With The Tv Monitoring And Safety System. *Fashion Appearance For Applying To A Variety Of SituationsUsing The High-Fidelity Digital Processing Chip To Amplify The Audio Signal Via The Code And Decode Technology.It Can Eliminate The Background Noise And High Frequency Interfered Voice Efficiently. Specifications: Operating Voltage: Dc6v-12V Output Level:0-6V Dissipation Circuit:10Ma Audio Monitoring Range:5-100 Square Meter Frequency Response:3005500Hz Output Impedance:600 Item Size:70*70*45Mm Environment Temperature:-25+85 Humidity:30%90% Package Information: Package Size: Approach.8.3*8.3*5.5Cm/3.27*3.27*2.17In Package Weight: Approach.85G/3Oz You Will Receive: 1*Audio Pickup Device 1*User Manual (English)