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 B07QC1SXJ8 Price: $16.99 Score: 1000.000 Category: Electronics Rating: 3.8 Votes: 75 Find similar productsMakerFocus 2pcs nRF24L01P+PA+LNA RF Wireless Transmission Module 2.4GHz ML01DP5 22dBm 100mW 2300M Measured Distance SPI Interface with Antenna Anti Theft Anti-Interference. . |  B01HYO608A Price: $19.95 Score: 6.897 Category: Electronics Rating: 4.3 Votes: 34 Find similar productsAdafruit (PID 3072 RFM95W LoRa Radio Transceiver Breakout - 868 or 915 MHz. Sending data over long distances is like magic, and now you can be a magician with this range of powerful and easy-to-use radio modules. Most WiFi, Bluetooth, Zigbee and other wireless chipsets use 2.4GHz, which is great for high speed transfers. If you aren't so concerned about streaming a video, you can use a lower license-free frequency such as 433 or 900 MHz. You can't send data as fast but you can send data a lot farther.' The modules do packetization, error correction and can also auto-retransmit so its not like you have worry about everything but less power is wasted on maintaining a link or pairing. These modules are great for use with Arduinos or other microcontrollers, say if you want a sensor node nework or transmit data over a campus or town. The trade off is you need two or more radios, with matching frequencies. This is the 900 MHz radio version, which can be used for either 868MHz or 915MHz transmission/reception - the exact radio frequency is determined when you load the software since it can be tuned around dynamically. These are +20dBm LoRa packet radios that have a special radio modulation that is not compatible with the RFM69s but can go much much farther. They can easily go 2 Km line of sight using simple wire antennas, or up to 20Km with directional antennas and settings tweaking Range of approx. 2Km, depending on obstructions, frequency, antenna and power output All radios are sold individually and can only talk to radios of the same part number. E.g. RFM69 900 MHz can only talk to RFM69 900 MHz, LoRa 433 MHz can only talk to LoRa 433, etc. Each radio comes with some header, a 3.3V voltage regulator and levelshifter that can handle 3-5V DC power and logic so you can use it with 3V or 5V devices. You will need to cut and solder on a small piece of wire (any solid or stranded core is fine) in order to create your antenna. Optionally you can pick up a uFL or SMA edge-mount connector and attach an external duck. |
 B08XY1CZPN Price: $99 Score: 6.410 Category: Electronics Rating: 4.4 Votes: 21 Find similar products5 Pairs BIDI SFP Network Transceiver Module, 1.25 Gigabit Single Mode LC 1000BASE-LX Single Fiber Interface SFP 20km. 【Product Compatibility】 The SFP module was embed with compatible source code, which can be compatible with most of main stream vendor, like Ubiquity, Netgear, Mikrotik, DLink, TPLink etc., and other main stream vendors 【Easy Deployment】 The BIDI SFP module support hot swappable and single fiber data transmission (Blue Type: TX1310nm/RX1550nm; Yellow Type: TX1550nm/RX1310nm) , which makes instanllation more convenient and much cost-saving for fiber than duplex interface SFP 【Widely Application 】 The SFP Module can be widely deployed with Switch, Fiber Media converter, Router, Firewall, Server etc., 【Full Aging Testing 】 The SFP Module was 100% full aging testing before shipment, which can decrease most of hardware failure rate before shipment and make sure the product reliability 【Mess Deployment and successful reference site】 More than 1,000,000+ pcs SFP module are deployed already in the world already, thousands of reference site in different countries 【Support 20KM Long Distance Deployment 】 the single mode LC fiber module supports upto 20 km max cable length, which can be suitable for most of long distance deployment. 【Deployment Notice】 1. Please don't use the single mode fiber module for short distance deployment ( less than 500m ), because the long distance SFP use the high frequency ( 1310nm ) wavelength for signal transmission, which will shorten the fiber module using life for short distance deployment. If less than 500m, please choose other short distance multi-mode SFP module (850 nm ) 2. Need to use different color type BIDI SFP Module as one pair for one single fiber connection 【Product model】 Blue: SFP-GE-LX20-T13R15-BIDI Yellow: SFP-GE-LX20-T15R13-BIDI 【Detailed Specification】 Cable Type: Single-Mode Fiber Connector: Single LC Interface Data Range: 1.25Gbps Blue SFP: TX 1310nm and RX1550nm Yellow SFP: TX1550nm and RX1310nm Max Cable Length: 20km Temperature: 0-70℃ 【Package List】 5 pcs SFP-GE-LX20-T15R13-BIDI 5 pcs SFP-GE-LX20-T13R15-BIDI 【Limited Lifetime warranty】 For any reason you are unsatisfied with the SFP transceiver during the warranty period, we will provide you a best solution, and we will refund your money in full if you still have concerns. |  B09XHJFBSH Price: $13.99 Score: 6.250 Category: Electronics Rating: 4.1 Votes: 11 Find similar productsAOICRIE 3PCS ESP8266 ESP-01S Wireless WiFi Transceiver Relay Module Compatible for Arduino Smart Home Remote Control Unlock Set. With the ESP8266-01S relay set you have everything in one module to control a relay via WLan. The powerful ESP-01S with 1 MB memory and 80 MHz CPU clock enables independent execution, even in more complex applications, and can be easily integrated into the PCB antenna with a range of up to 300 m either directly in AP mode or integrated into your own Smart Home. Specifications: ✔️ Mains current control via WLAN 802.11 b/g/n provides strong and stable connection ✔️ The module is convenient to use and can be switched with only one GPIO pin ✔️ Supply voltage: 5V ✔️ Various open source firmware available Package: 3 x ESP8266 ESP-01S Module 3 relay adapter ESP8266. |
 B0B7QM29QP Price: $16.99 Score: 6.211 Category: Electronics Rating: 4.3 Votes: 71 Find similar productsAideepen 3PCS NRF24L01+PA+LNA Module with SMA 2.4 GHz 1100m+3PCS NRF24L01 8 Pin Socket Breakout Adapters Compatible. . |  B07D4ZGYRH Availability: Currently unavailable Score: 6.135 Category: Electronics Rating: 5 Votes: 2 Find similar productsNOYITO RXB6 433Mhz Superheterodyne Wireless Receiver Module (Pack of 2). . |
 B097R26TJJ Price: $18.99 Score: 6.135 Category: Electronics Rating: 4.4 Votes: 16 Find similar products10G SFP+ SR Transceiver, SFP+ to LC Multimode Module Compatible for Intel E10GSFPSR 10G SFP+ Module 10GBASE-SR Multi-Mode MMF,850nm, Duplex LC, 300m, DDM. . |  B095H66TD8 Price: $58 Score: 6.098 Category: Electronics Rating: 4.8 Votes: 617 Find similar products10GBase-SR SFP+ Transceiver, 10G 850nm MMF, up to 300 Meters, Compatible with Cisco SFP-10G-SR, Meraki MA-SFP-10GB-SR, Ubiquiti UniFi UF-MM-10G, Fortinet, Mikrotik, D-Link and More, Pack of 4. . |
 B07DWNLSMG Price: $7.99 Score: 6.024 Category: Electronics Rating: 4.2 Votes: 91 Find similar productsKEYESTUDIO 3.3V 2Pcs ESP8266 ESP-01 ESP01 WiFi Wireless Serial Transceiver Receiver Module Starter Kit for Arduino R3 Raspberry Pi Project. KEYESTUDIO- specialized in creating high quality, innovative, user-friendly open source hardware, such as micro-controllers, shields, sensors, display, learning kits, robotics and more for Arduin, Raspberry PI, STM32, 51, MICRO BIT etc. It is an ultra-low-power UART-WiFi pass-through module with industry-leading package size and ultra-low power technology. It is specially designed for mobile devices and IoT applications. It can connect users' physical devices to Wi-Fi wireless network for Internet or LAN communication, achieving the networking function. Features of Esp8266 WiFi Module : 1)Support wireless 802.11 b/g/n standard 2)Support three working modes: STA/AP/STA+AP 3)Built-in TCP/IP protocol stack to support multiple TCP Client connections 4)Support various Socket AT commands 5)Support UART/GPIO data communication interface 6)Support Smart Link intelligent networking function 7)Support remote firmware upgrade (OTA) 8)Built-in 32-bit MCU, able to double as an application processor 9)Ultra low consumption, suitable for battery powered applications. 10) 3.3V single power supply. |  B08D7C5K5T Availability: Currently unavailable Score: 5.988 Category: Electronics Rating: 5 Votes: 3 Find similar productsHailege 2pcs RFID Kit - Mifare RC522 MFRC-522 RFID RF IC Card Sensor Module + S50 Blank Card + Key Ring for Arduino Raspberry Pi. Description: 1. MFRC522 is a highly integrated read and write chip which is applicable to 13.56MHz contactless communications. 2. It is a non-contact read and writer card chip, low voltage, low cost and small size, is a better choice for smart meters and portable handheld devices development. 3. MF RC522 completely integrated in all types of 13.56MHz passive contactless communication methods and protocols. 4. Support 14443A compatible transponder signals. The digital part handles ISO14443A framing and error detection. In addition, support fast CRYPTO1 encryption algorithms, terminology validation MIFARE products. 5. MFRC522 support MIFARE series of high-speed non-contact communication, two-way data transmission rate up to 424kbit/s. 6. As a highly integrated 13.56MHz card reader new family of chips, there are many similarities between MF RC522, MF RC500 and MF RC530, but also have many differences. Communication between it and the host SPI mode helps to reduce the connection, reduce PCB board size and cost. Electrical parameters: Operating current :13-26mA/DC 3.3V Idle current :10-13mA/DC 3.3V Sleep current: <80uA Peak current: <30mA Operating Frequency: 13.56MHz Supported card types: mifare1 S50, mifare1 S70 MIFARE Ultralight, mifare Pro, MIFARE DESFire Product physical characteristics: size: 40mm×60mm Environmental Operating temperature: -20-80 degrees Celsius Environmental Storage Temperature: -40-85 degrees Celsius Relative humidity: relative humidity 5% -95% Package Included: 2 * Mifare RC522 MFRC-522 RFID RFID Kit. |