Best High Frequency Board

Topvico Water Leak Detector, 120dB Loud Siren, Powered by 9V Battery (not Include), Sensor Alarm for Kitchen Basement Water Heater, 5 Pack

  • 120dB loud alarm voice, keep alarm to notice you or neighbors until the water dry or sensor turn off, low cost and effective water leak alarm to prevent water damage at your home and business.
  • High sensitive 24k plating detect board, repeated use after dry the board.
  • Double side sticker (included) for easy install anywhere.
  • 37.8 inches cable, easy extend more than 150 ft. of wire by user (normal electric wire available, not include), detect water anywhere corner.
  • Supply by 9V battery (not include, suggest use brand Alkaline battery), battery life will be about 12 months for normal use (low quality battery about 6 months, very high frequency alarm or testing, battery life will be shorter).
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HGLRC Forward FD413-VTX F4 FC Flight Controller Stack 13A Blheli_S 4 in 1 ESC 400mW for Mirco Racing Drone Quadcopter

  • Tiny size but powerful Integrated body New style 16X16mm , Exclusive Flight stack which design for micro racing drone , ultra tiny and light weight great choice for FPV racer . It integrated F411 Flight Controller Board and 13A BLHeli_S 2S 3S 4S 4in 1 Electronic Speed Controller.
  • High-end quality F411 flight controller F4 Flight Controller Board , 32bit STM32F411 Chip , support dual 8K , Betaflight has a more powerful MPU6000-SPI operating at a higher frequency , making everything run smoothly ..
  • Power switchable PIT/25mW/100mW/200mW/400mW Switchable Transmission VTX via Betaflight Flight Control Board.
  • FD13A 4in1 ESCForward FD13A 4-in-1 ESC , 2S 3S 4S ESC speed controller , constant current 13A.
  • Support SBUS/PPM/DSMX/iBUS receiver , keep the stability and flying ,Support Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600, MultiShot,PWM.
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TDA7498E Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 160W×2+220W, 15V-36V Audio Power Amplifier Module with Treble and Bass Control,Black

  • ...ier board uses two TDA7498E high-fidelity maximum output power up to 160W*2+220W..
  • 【TREBLE & BASS CONTROL】If you are tired of an amplifier with only one volume knob, then you feel right, because you have further requirements for audio. By adjusting the high and low frequency knobs of the ZK-HT21 power amplifier board, you can make the sound more layered and make the bass more shocking..
  • 【HIGH COMPATIBILITY】The DC adapters on the market (plug specification 5.5mm*2.1mm) basically can meet the needs of the ZK-HT21 Bluetooth power amplifier board. If your existing DC power plug is not 5.5mm*2.1mm, there is no The problem is because we have included a DC conversion plug in the product..
  • 【PROTECTION FUNCTION】ZK-HT21 Bluetooth power amplifier board has multiple protection mechanisms to ensure its safe operation. It has short-circuit protection, over-current, over-heat, and anti-reverse protection. When an overload occurs, the device reports the fault condition to the processor to protect itself from damage.
  • 【7 * 24 Hours After-sales Service】 Paying Attention To Custome....
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Rockville APM5W 5.25\ 2-Way 250W Active/Powered USB Studio Monitor Speakers Pair, White, 5 inch

  • 6.5" 2-Way 350 Watt Active Studio Monitor Speaker System in Black (Pair). Quad Amp Design: Each Driver Features Frequency Specific Independent Amplifiers. Injection Molded Polypropylene Cone Woofer. Rubber woofer surrounds increases sound quality and eliminates unwanted distortions.
  • The enclosure is built with the perfect amount of air space to maximize sound quality for a studio. The port is built to the perfect spec to enhance the sound. Full Range Class “D” Amplifier Circuitry with Auto-Switching Power Supply. LED Power on Indicator on Rear Panel.
  • Comes in 3 enclosure finish options Wood finish painted black. Wood finish painted white. Wood finish with vinyl front board. Ferro Fluid Enhanced 1.5" Neodymium Silk Dome Tweeter With Metal Grill Protection. Curved Front Bezel Design Eliminates Standing Wave Distortion..
  • Tweeter has 1” voice coil diameter. Rear-Firing Port Shaped and Designed by Sound Engineers to Reduce Port Turbulence and Deliver Distortion Free Top Sound Quality. Transducer Production Line to Make the SPL Performance Stable..
  • Specially Wound Voice Coils Produce Accurate Response along Entire Frequency Spectrum. One Complete Pair with Mater / Salve Output Connection with Included Noise Rejection Cabling. ¼” and XLR combo input ja....
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Quantum 1000W Digital Ballast 120/240V Dimmable Ballast

  • Run at 100%, 75% or 50% power and strikes both metal halide and high pressure sodium bulbs.
  • Accepts 120V/240V with no wiring needed (both cords included).
  • 208V-configurable with electrician assistance.
  • The most stable output frequency of any ballast, and runs 15% cooler than other digital ballasts on the market.
  • Higher lumen output than magnetic ballasts and can run efficiently on generators without flickering.
  • Resin sealed circuit board for high humidity installations and can easily be used in conjunction with lighting controllers and flip boxes.
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Rockville APM6B 6.5" USB Studio Monitor Speakers Bundle RockMix 2 Recording Mixer with USB Interface, (2) RCM03 Microphone, PRO-M50 Studio Headphones (4 Items)

  • ...etal Shock Mount. (1) Rockville PRO-M50 Studio Headphones w/ Detachable Coil Cable, Case+Extra Ear Pad.
  • Features of APM6B: Rockville APM6B 6.5" 2-Way 350 Watt Active/Powered USB Studio Monitor Speakers in Black (Pair). RMS: 175 Watt. Two-Way Active Studio Monitor Speaker System. Quad Amp Design: Each Driver Features Frequency Specific Independent Amplifiers. Enclosure is made of top quality MDF wood. Our enclosure is not particleboard, it is true high-grade MDF! The enclosure is 0.5” thick while the front board of it is a full 1” thickness to give you the ultimate best sound quality!..
  • What's in the Box of RockMix 2: Mixer with USB recording interface. USB cable. USB power adapter. 4 Non-slip rubber pads. Owner manual and warranty card. Recommended Applications:. Two Person Live Stream/recording (Zoom, podcast, etc). One instrument and one singer who wants to record or live stream or perform live. Features: Rockville RockMix 2 Channel Mic+Instrument Pro Recording Mixer with USB Recording Interface..
  • What's Included of RCM03: RCM03 Condenser Microphone (made of aluminum!). 100% Copper 10 foot 3.5mm jack to XLR cable to connect mic to your computer or other device. 100% Copper 10 foot XLR to XLR cable to connect to any mixer with phantom power. Metal ....
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VEVOR Ultrasonic Cleaner 2L Digital Ultrasonic Parts Cleaner with Timer 40kHz Professional 304 Stainless Steel Ultrasonic Cleaner 110V for Jewelry Watch Glasses Diamond Eyeglass Small Parts Cleaning

  • Powerful Cleaning Effect: The machine possesses ultrasonic cleaning frequency 40kHz,the most fitable frequency,with ultrasonic power 60W. The scientific parameter design of frequency and power can effectively make your valuables and items clean as ever without any damage..
  • Advanced Transducer Technology: The Cleaning machine enables 1 advanced transducers（1x60W=60W),equiped with sandwich piezoelectric transducer structure. The transducers with latest technology can greatly improve cleaning efficiency..
  • Special Capacity Design: Capcity 2L with Tank Size： 6.9''x 6.4''x 3.9''，It is made of high quality 304 stainless steel,which is more durable and sturdy to last for many years..
  • Digital Control Panel: The Cleaning machine features a digital display for precise time control.Available setting rang, Time:0-30mins.The digital panel with easy operation and elegant apperance satisfying the most customers..
  • Practical Application: This ultrasonic cleaner,with excellent apperance, performance and special capacity design, is widely used for cleaning jewelry,eyeglasses,watch,circuit board, dental equipment,and other small parts,FCC/CE/RoHS/UL Certified.
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AudioPipe APTV-600.4 Full Range IP67 Waterproof Marine Bridgeable Class D Amplifier for ATVs, UTVs, Boats, and Motorcycles, Black

  • CLASS D WATERPROOF AMPLIFIER: Bridgable class D amplifier ideal for side-by-sides, UTV's, ATV's, boats, or motorcycles.
  • RMS POWER SPECS: Output power (RMS): 60 watts x 4 channels at 4 ohms.
  • MULTIPLE PROTECTIONS: Thermal, over current, and short circuit protection ensure your equipment is safe and secure.
  • LOW RESISTANCE TECHNOLOGY: Features surface mount technology (SMD) with a 4 layer fiberglass printed circuit board (PCB) design.
  • AMPLIFIER SPECIFICATIONS: Adjustable HP/LP frequency control.
  • Frequency response: (-3dB) 20Hz to 20KHz.
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2) Rockville APM8B 8' 2-Way 500 Watt Powered USB Studio Monitors+Stands and Pads

  • ... 10.35" x 13"/3 Angles. Features: RockvilIe APM8 8" 2-Way 500 Watt Active USB Studio Monitor Speakers in Black (Pair). Peak Watts: 500 Watt Per Pair (250 Watts Per Speaker). RMS Watts: 250 Watt Watts Per PAid (125 Watts Per Speaker).
  • Two-Way Active Studio Monitor Speaker System. Quad Amp Design: Each Driver Features Frequency Specific Independent Amplifiers. Enclosure is made of top quality MDF wood. Our enclosure is not particle board, it is true high-grade MDF! The enclosure is 0.5 thick while the front board of it is a full 1 thickness to give you the ultimate best sound quality!. Comes in 3 enclosure finish options Wood finish painted black. Wood finish painted white. Wood finish with vinyl front board.
  • We use baking paint made for wood surface. It lasts long and is the best paint for speakers!. Beautiful finish is matte with a slight shine to it. Our designers spent a lot of time on the color to make it beautiful and elegant looking to improve the appearance of your studio or room. The enclosure is built with the perfect amount of air space to maximize sound quality for a studio. The port is built to the perfect spec to enhance the sound.
  • Full Range Class D Amplifier Circuitry with Auto-Switching Power Supply. LED Power on Indicator on Rear Panel. ....
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Rockville Rock Shaker 8\ Inch Black 400w Powered Home Theater Subwoofer Sub

  • ...ion-Free Playback Even at Max Volume Listening! Very Clean Sound! . Enclosure is filled with fire resistant poly cotton. Detachable foam grill. Inputs / Outputs / Controls: . . RCA line input. RCA line output. Speaker High level inputs. Speaker High level outputs..
  • Volume control. Phase switch (0°-180°). Crossover Frequency control. Power switch. Standard IEC power cable included. Specifications: . . Amplifier: Class D. Woofer Impedance: 4 Ohm. Signal to noise ratio: 85 dB (Maximum output with THD+1003c1%, A-weight). THD: 1%. INPUT sensitivity: 88dB +/- 2dB. Frequency Response: 20 Hz - 200 Hz. 400 Watts peak output. 200 Watts RMS output. Voltage: 110-240V..
  • Product Dimensions in Inches: (W*H*D): 11. 8'' x 15'' x 13. 8''. Shipping Dimensions in Inches: (W*H*D)14. 6 ''x 18. 3'' x 18. 9 ''. Unit Weight: 18 LBS. Shipping Weight: 22 LBS. Color: Black.
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