Top Two Selected Frequency Module

AOICRIE 3Pcs DC to DC Voltage Regulator Step Down Power Supply Buck Converter Module 6-40V to 5V 3A Dual USB Port Output

  • DC-DC 9V/12V/24V/36V to 5V 3A step down power converter module..
  • Converting Efficiency: 92% (MAX), Switching frequency: 150KHZ, Input: 6V-40V, Output: 5V / 3A (MAX)..
  • This module has short circuit protection, Working temperature: -40 to +85 degree Centigrade..
  • Load capacity: Maximum output 3A (with two phones simultaneously) Conversion efficiency: 92%..
  • On-baord Dual USB port with 5V 3A fixed output,can be used as a USB charger for your power bank,smart phones,tablet,etc.DIY Mobile Power Supply,5V output for charging Phone,MP3, MP4, etc..
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DAB Digital FM Radio Portable Handheld Radio DAB/DAB+ Digital & FM Radio Wireless with Rechargeable Replaceable Battery

  • The product is made of ABS raw material, the shell is sprayed with PU varnish..
  • Stylish styling, portable, with a lanyard, easy to use..
  • LCD display screen, the volume is 29 levels..
  • Mono, two-channel interchangeable (selected signal frequency can be selected in the INFO display)..
  • Turn on the radio, can display time (12 hours / 24 hours format is optional) and date..
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Bose Acoustimass 10 Series V Home Theater Speaker System, Black

  • The best performing Acoustimass system from Bose delivers spacious surround sound for larger rooms.
  • Redesigned Direct/Reflecting Series II speakers have a slimmer profile and can mount flush to your wall.
  • Powerful low note effects from powered Acoustimass module with two high performance drivers.
  • Adjustable controls for volume and low-frequency effects.
  • Cables and connectors included and clearly marked for easy setup.
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Large Current 50A H-Bridge High-Power Single-Channel Motor Driver Module Semiconductor Refrigeration

  • 【H-bridge Driver Module】The drive uses a full H-bridge driver module full-bridge MOSFET driver chip and composed with very low internal resistance and high current. MOSFET H-bridge driver circuit, with strong drive and braking effect, signal isolation chip isolates motor drive effectively..
  • 【Effective Protection】With the microcontroller PWM signal isolation, effectively protect microcontroller..
  • 【Input Maximum】To achieve the motor forward and reverse rotation, two PWM input maximum 200kHz frequency..
  • 【Fully Compatible】Power indicator is schematically clear. The power supply voltage 5V to 15V. 3.3V to 12V, PWM level is fully compatible. High current 50A..
  • 【Warm Tips】Ffor your safety and protection of use, our product is tested to ensure trouble-free installation and performance, please rest assured to buy..
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Audio-Technica Instrument Condenser Microphone (ATM350U)

  • you want it – the gooseneck won’t flop around no matter how aggressively you move the instrument as you play. The microphone’s cardioid polar pattern isolates the instrument by reducing side and rear pickup, and the switchable 80 Hz high-pass filter on the in-line power module helps control undesired low-frequency noise. The system also includes an AT8468 violin mount with hook-and-loop fastener and a protective carrying case. Features: Low-profile mic design for minimum visibility Crisp, clear, well-balanced microphone response, even at high SPLs Cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source Unmount universal clip-on mount attaches securely to instrument bell and provides excellent shock resistance for the microphone Rugged Unmount 5" gooseneck rigidly holds its shape, keeping microphone accurately positioned even during aggressive play In-line power module is equipped with a switchable 80 Hz high-pass filter to control undesired ambient noise Interchangeable elements available for hyper cardioid and omnidirectional polar patterns Included violin mount with hook-and-loop fastener provides an additional mounting option Specifications: Element: Fixed-charge back plate, p....
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High Frequency Transducer, Bandwidth Mixing Board Mixer Module -10dBm for Quadrature Modulation for Base Station for HF VHF Receiver

  • 【Important Data】: SSB noise figure (NF) of 9.75 dB--Input IP3: 28.5 dBm--Input P1dB: 13.3 dBm--Typical LO drive: 0 dBm--Power conversion gain of 1.8 dB.
  • 【Wild Used】: This 5V double balance up and down frequency mixer module is widely used for cellular base station receivers, Radio link down converters, Broadband block conversion, Instrumentation.
  • 【Low Power】: Our 130mA 50 Ohms Balun coil coupling frequency conversion mixer features adjustable bias for low power operation, so you can trust and use this RF mixer inverter with confidence.
  • 【Wonderful Components】: This 5V ADL5801 double balance up and down frequency mixer module is equipped with exposed paddle, 4mm x 4mm, 24-lead LFCSP package, so it will be an ideal choice for you.
  • 【Size】: Power supply: DC+5V@80mA(anti-reverse connection protection.)--RF_IN/RF_LO input frequency range: 10-6000Mhz--Input and output impedance: 50 ohm--Type:Input Balun coupling, Input/output Balun coupling(Optional)--Weight: Approx.15g/0.5oz.
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Display Digital Signal Frequency Counter PLJ 6LED H LED Signal Generator Cymometer Tester Frequency Measurement Modules Adjustable Module 0.1~1000MHz(Backlight Font red)

  • Test Accuracy: The frequency meter is designed with dual intermediate frequencies. The intermediate frequency value and the addition and subtraction mode can be preset separately without affecting each other, which can achieve high stability and high resolution. The tester has good sensitivity, better than 60mVPP.
  • Excellent Performance: The frequency reference uses a temperature compensated voltage controlled crystal oscillator. The display driver adopts LED display special chip, the digital tube has high brightness and less external interference.
  • Small and Convenient: This module is compact and exquisite in design, can be put into a pocket, does not occupy extra space, is convenient to carry, and has reliable performance, good visual effects, and low cost.
  • Convenient to Operate: The circuit of the frequency meter is simple, the design structure is reasonable, and the unique two key control method and precise time algorithm are used to make the operation simple and fast.
  • Multi Function: The circuit is simple, the structure is reasonable, double button control, and the operation is simple. Each setting is automatically saved, and the power is on.
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RF Oscillator Module, VCO 515MHz-1150MHz Voltage Controlled RF Oscillator Frequency Source Broadband Oscillator Module

  • [Strong compatibility]:For Yaesu FT-817/857/897 and other models for temperature-compensated crystal components, fully compatible with the original TCXO-9..
  • [High stability]:he frequency is 22.625MHz, which can improve the stability of the machine after replacing the original crystal. It is superior to the original module in different environments..
  • [High cost performance]:The price is only 15% of the original module, and the cost performance is extremely high..
  • [Effect is remarkable]:Actual test the frequency of the crystal is observed with a high-precision frequency meter. The original crystal frequency is deflected with a fire-baked , but this temperature-compensated crystal has no obvious change, and the effect is remarkable..
  • [Simple operation]:Turn off the power of the machine, open the cover of the machine, find the position where the temperature compensation crystal is installed. You need to unplug the ordinary crystal of the machine, then insert it according to the stitching of the machine. After installation, you can start using it without any settings..
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Honeywell LYNX Touch 5210 4.3\ All-in-One Wireless Home and Business Alarm Control System

  • ...audio alarm verification Programming Options stored in EEROM Can be uploaded, downloaded or controlled via IBM-compatible computer using Compass Downloader software and specified modem or via capable GSM, Wi-Fi or IP communications module Intuitive programming interface reduces time and mistakes Programming options selected from allowable list Contextual options, defaults and pre-fills for faster set-up Listings UL 985, UL 1023, UL 1635 CAN/ULC-S545, CAN/ULC- Subject-C1023 ANSI/SIA CP-01-2010 System Power Primary power: plug-in power supply, 110VAC to 9VDC, 2.7A output 300-04705V1 or 300-04065V1 (300-04063V1 in Canada) Four or 24-hour backup battery: rechargeable nickel-metal hydride battery pack rated at 7.2Vdc Operating temperature: 32°F – 122°F (0°C – 50°C) Dimensions (approx) 6.1" H x 8.5" W x 1.71" D (15.5cm H x 21.6cm W x 4.4cm D).
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Retevis RT3S DMR Radio, Dual Band Radio, Digital 2 Way Radio, Dual Time Slot 2000mAh Dual Band Scanning SMS Emergency Alarm, Long Range Handheld Walkie Talkie for Camping Traveling(1 Pack)

  • compatible with digital and analog modes.
  • includes dual band 3,000 channels multiple digital talk groups.
  • quickly switch working modes to adapt to different usage environments.
  • 2m and 70cm frequency bands can be used in urban or suburban areas.
  • different frequency bands can be selected for use.
  • long distance calls such as camping and hiking are available.
  • easy to use interface and digital buttons.
  • allow you to operate without any trouble.
  • manual operation to quickly adjust function and frequency.
  • support SMS function and can write, receive and send information.
  • realize two groups of calls at the same time at one frequency point to improve communication efficiency.
  • dual time slot for repeater or point to point.
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High Speed Comparator High Speed Frequency Meter Front Shaping Comparator for Low-Voltage Applications Conversion Circuit

  • LOW VOLTAGE APPLICATIONS -- The input common mode range is better than the swing input, which is very suitable for low voltage applications..
  • APPLICATION -- Digital module can be used for wide voltage range and periodic signal shaping..
  • FRONT END ADJUSTMENT -- Used as a front end conditioning module in time domain measurements for frequency and phase difference..
  • PARAMETER -- The input voltage is 10 to 1000mV, the input frequency is about 200MHz DC, and the input impedance is 50 ohms..
  • RAIL TO RAIL OUTPUT -- The output level mode is rail to rail output, which can directly drive TTL / CMOS level..
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Synology 5 bay NAS DiskStation DS1019+ (Diskless), 5-bay; 8GB DDR3L

  • Quad-core CPU with AES-NI encryption engine, delivering reading and writing throughput at over 225 MB/s even when data are encrypted.
  • Loaded with two 4GB DDR3L memory module, providing 8GB memory capacity in total.Power Supply Unit / Adapter - 120 W. AC Input Power Voltage - 100 V to 240 V AC .Power Frequency - 50/60 Hz, Single Phase.
  • Built-in two M.2 NVMe SSD slots for system cache support.
  • Dual 1GbE (RJ-45) ports with failover and Link Aggregation support.
  • Dual-channel H.264/H.265 4K video transcoding on the fly.
  • Scalable up to 10 drives with one expansion unit DX517 connected.
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