Reviews Low frequency Counter Module

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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2 Pieces Digital FM Transmitter Module Stereo FM Transmitter DSP PLL 76.0 -108.0MHz Stereo Frequency Modulation with LCD Display Line/USB/Mic Input, DC 3.0V - 5.0V

  • Good performance: thanks to the DSP and PLL technology, these multi-functional stereo FM transmitter modules can provide you with quality stereo.
  • Practical design: the FM transmitter module has a blue backlit LCD display, allowing you to clearly see the value in a dark environment.
  • The power consumption is extremely low, and noise interference is small.
  • Suitable for: this digital FM transmitter supports line/USB/mic channel input, its transmitting frequency range is 76.0~108.0 MHz, and the frequency response range is from 50 Hz to 18 KHz.
  • Frequency adjustment stepping is 0.1 MHz/ times when short press the key and 1.0 MHz/ times for long press.
  • Wide uses: the digital FM transmitter module can be applied to FM wireless, USB PC broadcast, maternal and child monitoring, wireless microphone and much more.
  • Warm notice: please confirm whether the power polarity and power voltage are correct before turning on the power.
  • If the input voltage exceeds 5V or the positive and negative poles of the power supply are connected reversely, it may cause permanent destroy to the module.
  • Do not touch the components on the back of the module while working, so as not to affect the normal operation of the module.
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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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FC-3000P Ham Radio CB Frequency Counter 27Mhz-3000Mhz - High Sensitivity with CTCCSS DCS Decoder for The VHF & UHF - CB Continuous Carrier Signal, Walkie-Talkies, DMR Radio Transceivers

  • ✔️ IDENTIFYING FREQUENCY - The frequency meter measures frequency parameters of the continuous carrier signal walkie-talkies , with signal strength indicator..
  • ✔️ PORTABLE FREQUENCY COUNTER - Counting continuous wave signal comes from Two-way Radio. VHF & UHF frequency measurement, useful for the CB amateur Ham Radio..
  • ✔️ FREQUENCY COUNTER METER RANGE - CB, HAm Radio, DMR frequency range 100Mhz-3000Mhz. Build-in DCS CTCSS Decoder Low PPM crystal time base used to achieve high accuracy measurement.
  • ✔️ EASY TO OPERATE - User friendly controlled with four buttons. The DMR radio frequency counter is compact and handy when needed..
  • ✔️ 100% MONEY BACK GUARANTEE 2 YEARS WARRANTY ensures this will quickly become your favorite no-risk purchase..
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EC Buying AD620 High Accuracy Low Power Programmable Instrumentation Amplifier Module Voltage Amplifier Module Differential Amplifier Single-Ended/Differential Small Signal/Small Amplifiers Module

  • ...Module gain: When there is no solder slip, the AD620 will zoom by 10 times by default, and the AD623 will zoom by 20 times by default. During welding slip, AD620: G=1+50K/Rg, AD623: G=1+100K/Rg ✭Maximum magnification of the module: more than 2000 times (actual measurement), due to the large gain of the waveform frequency band, it is recommended to use multi-stage amplification with high gain ✭Fixed output voltage: 5V-10V (default delivery 5V).
  • ♥ Other parameters: ✭Common mode rejection ratio: AD620: 100dB (minimum, G=10).
  • AD623: 90dB (minimum, G=10) ✭Input bias current: AD620: 1.0nA (max).
  • AD623: 23nA (max) ✭Input offset voltage: AD620: 50μV (max).
  • AD623: 200μV (max) ✭Input offset offset: AD620: 0.6μV/°C (max).
  • AD623: 2μV/°C (max) ✭Input voltage noise: AD620: 9nV/√HZ (1KHZ).
  • ♥Precautions: 1. The power supply of the module is a single power supply, and the voltage cannot exceed 26V 2. Since the module is a high-precision device, to avoid unnecessary interference, it is recommended to use a linear power supply for power supply 3. It is recommended to use SMA to BNC line input and output signal for the output signal. Compared with the observation effect, poor contact or inferior wire may cause signal att....
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DSE7310 Diesel/Gas Generator Genset Controller Panel Auto Start Control Module,DSE7310 LCD Screen Genset Controller Module

  • DC20D is one module used for Diesel Engine or Generator..
  • The status of the engine and generator can be checked conveniently..
  • It is with the functions of Auto Star/Stop, Protection and Alarm indication. DC Power and Running situation is indicated on the front panel..
  • Over Frequency, Low Frequency, Over Voltage, Under Voltage, Low Oil Pressure, High Temperature, Low Water Level, Low Oil Level, Charge Failure,....
  • The output connector is connected with traditional relay which can burden more output current. The parameters can also be set by the front face....
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ACEIRMC 2pcs ESP32-CAM WiFi Bluetooth Board ESP32-CAM-MB Micro USB to Serial Port CH340C with OV2640 2MP Camera Module Dual Mode for Arduino

  • The ESP32-CAM-MB module is a small camera module with a size of 39.8MM*27MM.
  • ESP32-CAM-MB adopts Micro USB interface, convenient and reliable connection method, convenient to apply to various IoT hardware terminal occasions.
  • ESP32-CAM-MB module can work independently as the smallest system.
  • WiFi+Bluetooth dual-mode development board based on ESP32 design, using PCB on-board antenna, with 2 high-performance 32-bit LX6CPU, using 7-level pipeline architecture, main frequency adjustment range 80MHz to 240Mhz.
  • Ultra-low power consumption, deep sleep current is as low as 6mA. It is an ultra-small 802.11b/g/n Wi-Fi + BT/BLE SoC module.
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Amrex 2\x2\ Sponge Insert Replacements From Caputron (10 Inserts/Pack)

  • Design The Output Contact Adopts Relay, Which Can Withstand Large Output Current, And Can Set System Parameters According To The Button, So As To Meet The Application Of Different Occasions..
  • Characteristics Dc20D Is One Module Used For Diesel Engine Or Generator. The Status Of The Engine And Generator Can Be Checked Conveniently..
  • MultiFunctional It Is With The Functions Of Auto Start/Stop, Protection And Alarm Indication. Dc Power And Running Situation Is Indicated On The Front Panel..
  • Easy To Use Add Current, Speed Measurement Display Function, Add Rs485 Interface, Can Be Connected To The Computer..
  • Good Effects Over Frequency, Low Frequency, Over Voltage, Under Voltage, Low Oil Pressure, High Temperature, Low Water Level, Low Oil Level, Charge Failure, OverTime Stop, Emergency Stop Alarm System As Well As Low Battery Voltage Can Be Indicated In Time..
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DGZZI 50pcs Blue 5mm Pitch PCB Mount Screw Terminal Block Connector for Arduino (20pcs 2 Pin + 15pcs 3 Pin + 15pcs 4 Pin)

  • Application: crystal oscillator, IC socket, DIY PCB universal board, Dupont wire, digital tube, buzzer, Arduino UNO board, PIC programming unit, AVR ATMEL programming unit, connector suite, USB TO TLL module, power module, LCD module, RS232 TO TLL module..
  • Package includes: 20 x 2 Pin Screw Terminal Block + 15 x 3 Pin Screw Terminal Block + 15 x 4 Pin Screw Terminal Block.
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Knowtek DSE703 Auto Start Generator Control Panel DSE 703 for Generator Genset Alternator

  • The DSE703 Generator Controller is an Automatic Start Control Module that offers an excellent range of engine monitoring and protection features..
  • On-site module configuration to match user requirements.
  • Hours counter provides accurate information for monitoring warranty periods.
  • Multiple engine parameters are monitored simultaneously.
  • DSE703 has been designed to monitor over speed, under speed, high engine temperature, low oil pressure, battery charge fail and fail to start..
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Minelab Equinox 800 Multi-IQ Underwater Metal Detector & Pro-Find 15 Pinpointer

  • Includes: PRO-FIND 15 pinpointer, EQX 11" Double-D Smart Coil with Skidplate, Wireless Bluetooth / apt-X Low Latency Headphones, WM 08 Wireless Audio Module.
  • Multi-Language Screen Protectors, Adjustable Armrest, USB Charging Cable with Magnetic Connector,.
  • Features: 4 Detect Modes (Park, Field, Beach, Gold).
  • 6 Frequency Options (Multi, 5kHz, 10kHz, 15kHz, 20kHz, 40kHz).
  • Bluetooth Headphones and WM 08 Wireless Module Supplied.
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Energy Dynamotor,Miniature Hand-cranked USB Charging Generator Power for Backup Lighting Power Supply,Charging,Testing, Teaching,Hydraulic Generator,etc

  • DC20D is one module used for Diesel Engine or Generator..
  • It is with the functions of Auto Start/Stop, Protection and Alarm indication. DC Power and Running situation is indicated on the front panel..
  • The status of the engine and generator can be checked conveniently..
  • Over Frequency, Low Frequency, Over Voltage, Under Voltage, Low Oil Pressure, High Temperature, Low Water Level, Low Oil Level, Charge Failure, Over-time Stop, Emergency Stop Alarm System as well as Low Battery Voltage can be indicated in time..
  • The output contact adopts relay, which can withstand large output current, and can set system parameters according to the button, so as to meet the application of different occasions..
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