Reviews Long Distance Transmitting Module

Fielect 10Pcs HY810A Slot PCB Photo Interrupter Slotted Optical Sensor Switch for Object Detection and Automatic Counting

  • 【Parameters】- Installation method:4PIN.
  • Whether the detection distance is adjustable: not adjustable.
  • 【Structure】- The photoelectric sensor module consist of an infrared transmitting tube and an infrared receiving tube, mini size, compact construction..
  • 【Working Principle】- The sensor optico senses the presence of an object by using the reflective IR beam from the object..
  • 【Application】- Slotted Optical Sensor Switch normally used for the detection of reflective materials such as paper, IBM cards, magnetic tapes, Fax and shredder paper, Obstacle, Black and white line etc..
  • 【Package Contents】- 10Pcs x Infrared Reflective Photoelectric Sensor..
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Taidacent 12V 2A High Power 8mm to 18mm Wireless Charging Mat Module DIY Inductive Modules Wireless Charger Module Power Supply Kit Receiver and Transmitter Offering Technical Support

  • The charging module is an 80mm DC remote module, and the circuit is simple and practical..
  • Transmitting coil: inner diameter 70mm outer diameter 88mm thickness 1.3mm.
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Seeed Studio LoRa-E5 Development Kit - Based on LoRa-E5 STM32WLE5JC, LoRaWAN Protocol and Worldwide Frequency Supported.

  • ...d provides with rich interfaces including Grove connectors, RS-485 terminal, male/female pin headers for you to connect sensors and modules with different connectors and data protocols, saving your time on wire soldering..
  • ✨【Long-distance Transmission Range to 10km】LoRa-E5 Mini Dev Board features an ultra-long transmitting range of LoRa-E5 up to 10km in an open area, extremely low chip power consumption, and user-friendly interfaces. Note: Ideal value in open area..
  • ✨【Global LoRaWAN and LoRa Frequency Plan Supported】LoRa-E5 Mini Dev Board embedded with LoRa-E5 STM32WLE5JC Module, which is the world-first combo of LoRa RF and MCU chip into one single tiny chip and is FCC and CE certified. It is powered by ARM Cortex-M4 core and Semtech SX126X LoRa chip, supports both LoRaWAN and LoRa protocol on the worldwide frequency..
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Abovehill 12V Wireless RF Remote Control Relay Switch Universal 1-Channel 315MHz Receiver with 1 Transmitters for Garage Door Openers, Cars, LED Lights & More

  • [Wireless Remote Control Module] The module can be remotely controlled from a long distance and has strong anti-interference. The remote control distance of the open space is 30 meters, which will reduce the control distance in the case of interference or wall blocking. The specific situation is determined according to the site..
  • [Wireless Remote Control Module] It is a single-channel control module with a working voltage of 12V DC and an operating frequency of 315mhz. It can directly drive DC0-30V/80-250VAC load, and the relay can withstand up to 10A.Remote control uses 12V 23A dry battery(No battery)..
  • [Wireless Remote Control Module] Its coding type is fixed code and learning code. The control mode is three modes: jog, self-lock and interlock. Delivery defaults to jog mode. If you need to switch to self-locking or interlock mode. You need to change the contacts labeled “L” and “T” on the back of the receiving module..
  • [Wireless Remote Control Module] It also has learning and deletion capabilities. The operation is very simple and detailed in the product description..
  • [Wireless Remote Control Module] A wide range of applications, from simple home remote control to autonomous control, such as windows, entrances, garage doors, alarm systems, lift....
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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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HC-05 Wireless Bluetooth Receiver RF Transceiver Module Serial Port Transmitter Module

  • RXD: the receiver, Bluetooth module receives from another device sent data.
  • normally connected to other devices transmitting end TXD?.
  • TXD: sending end, the Bluetooth module to send data to other devices.
  • receiving terminal is normally connected to other devices RXD.
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ACEIRMC HC-SR04 Ultrasonic Sensor Distance Module for Nano Robot XBee ZigBee by ElecRight（5pcs

  • HC-SR04 Ultrasonic Sensor Distance Module: using IO trigger for at least 10us high level signal.
  • This module has stable performance and accurate measurement distance..
  • Detection distance: 0.78~196 in/ (2cm~500cm).
  • This module is fully Compatible with GH-311 anti-theft module..
  • HC-SR04 Ultrasonic Sensor Distance Module for Nano Robot XBee ZigBee by ElecRight.
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2pcs Ultrasonic Module HC-SR04 Distance Sensor with 2pcs Mounting Bracket for Arduino Uno R3 Mega 2560 Nano Raspberry Pi 3 Smart Robotics Projects

  • HC-SR04 Ultrasonic Sensor Distance Module:using IO trigger for at least 10us high level signal..
  • The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back..
  • If the signal back,through high level,time of high output IO duration is the time from sending ultrasonic to returning.Test distance = (high level time velocity of sound (340M/S)/2..
  • Resolution:0.3 cm,Module precision:blind spots (2cm)-SUPER CLOSE..
  • The module performance is stable,measure distance accurately.SRF05,SRF02 ultrasonic ranging module comparable.This module is compatible with GH-311 anti-theft module..
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Elegant Choise Wireless HDMI Transmitter and Receiver Wireless HDMI Splitter/Adapter/Extender Stream 4K Audio&Video from Laptop/PC /Phone to TV/Projector/Displays for Students/Business Professionals

  • 【 4K HDMI Wireless Transmission 】 - EC wireless hdmi transmitter and receiver supports wireless transmission of pictures/audio/video from any....
  • 【 Transmission Speed and Distance 】 - EC hdmi wireless transmitter and receiver built-in 2.4GHz/5GHz dual-band WiFi module with high sensitivity....
  • 【 High Compatibility 】 - The wireless hdmi receiver adopts HDMI+VGA dual transmission mode, which is compatible with new and old display devices.....
  • 【 Plug N Play & Portable 】 - Plug the wireless hdmi transmitter and receiver into the power source and device and you can start transmitting....
  • 【 What You Get 】 - You can enjoy a 180-day return policy and customer service consultation services that respond within 24 hours. You can always....
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DollaTek 5V ESP8266 Four Channel WiFi Relay IOT Smart Home Cellphone APP Remote Control

  • On board high quality MCU and ESP-01WIFI module Two working mode : Mode 1:cellphone carry on wifi module directly Mode 2:cellphone and wifi module carry on router together Additional function :work as USB module when disconnect ESP-01 module.
  • Transmission distance: (1) the open environment, the mobile phone when carrying on the WIFI module maximum transmission distance of 100 m.
  • (2), when the WiFI module and cell phone carrying on the router at the same time the signal transmission distance depends on router signal.
  • Use the Smartconfig technology to complete the configuration of the account and password of the esp-01 WIFI module on the mobile APP. The configured account and password will be memorized after power off.
  • The board contains 5V,10A/250V AC 10A/30V DC relay, which can continuously absorb 100,000 times, with the protection of diode current and short response time..
  • With mode option and working statue LED indicator.With 4 isolator and strong anti interference ability.Reserved UART debug interface and MCU download port for program.
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