{"product_id":"microchip-rn4020-v-rm123-bluetooth-module-v4-1-1mbps","title":"MICROCHIP RN4020-V\/RM123 BLUETOOTH MODULE, V4.1, 1MBPS","description":"\u003cmeta name=\"description\" content=\"Buy MICROCHIP RN4020-V\/RM123 BLUETOOTH MODULE, V4.1, 1MBPS online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eMICROCHIP RN4020-V\/RM123 BLUETOOTH MODULE, V4.1, 1MBPS\u003c\/h1\u003e\n\n\u003cp\u003eThe MICROCHIP RN4020-V\/RM123 is a compact Bluetooth Low Energy module implementing the Bluetooth 4.1 specification with 1 Mbps data rate, designed for embedded systems requiring wireless connectivity with minimal power consumption. Professional embedded systems engineers, IoT developers, and wearable device manufacturers rely on this module to establish reliable short-range wireless communication in battery-constrained applications. This module solves the critical challenge of integrating certified Bluetooth connectivity into custom PCBs without requiring extensive RF design expertise or FCC certification overhead.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe RN4020-V\/RM123 operates as a standalone Bluetooth Low Energy transceiver module that communicates with host microcontrollers via UART, SPI, or I2C interfaces. The module integrates a complete Bluetooth 4.1 stack with an ARM Cortex M0 processor, antenna, RF front-end, and power management circuitry into a single 23x28mm form factor. Operating across the 2.4 GHz ISM band with frequency hopping spread spectrum technology, it achieves robust communication with interference immunity and regulatory compliance across global markets including FCC, CE, and IC certifications.\u003c\/p\u003e\n\n\u003cp\u003eThe RN4020-V\/RM123 distinguishes itself through ultra-low power consumption in idle mode (under 2 microamps), making it ideal for battery-powered applications requiring months or years of operation on single-cell coin batteries. The module supports both master and slave roles, enabling flexible network topologies for point-to-point or mesh networking scenarios. Advanced power management features including sleep modes, configurable advertising intervals, and connection parameter optimization allow developers to fine-tune power consumption based on specific application requirements while maintaining responsive connectivity.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eBluetooth Low Energy Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMicrochip Technology\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth Version\u003c\/td\u003e\n\u003ctd\u003eBluetooth 4.1 Low Energy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Rate\u003c\/td\u003e\n\u003ctd\u003e1 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e2.4 GHz ISM Band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmit Power\u003c\/td\u003e\n\u003ctd\u003e0 dBm nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceive Sensitivity\u003c\/td\u003e\n\u003ctd\u003e-95 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle Current\u003c\/td\u003e\n\u003ctd\u003eLess than 2 microamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003e23 x 28 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eUART, SPI, I2C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e2.0V to 3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eBluetooth 4.1 Low Energy certified stack with full protocol implementation eliminating need for external certification\u003c\/li\u003e\n\u003cli\u003eUltra-low idle current consumption below 2 microamps enabling multi-year battery life in wearables and remote sensors\u003c\/li\u003e\n\u003cli\u003eIntegrated antenna with impedance matching network providing reliable -95 dBm receive sensitivity and 0 dBm transmit power\u003c\/li\u003e\n\u003cli\u003eFlexible interface options supporting UART at up to 230400 baud, SPI, and I2C for seamless integration with any microcontroller\u003c\/li\u003e\n\u003cli\u003eDual role operation supporting both central and peripheral modes for master-slave or peer-to-peer network configurations\u003c\/li\u003e\n\u003cli\u003eComprehensive command set via transparent serial interface allowing firmware updates and real-time parameter configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eWearable fitness trackers and health monitoring devices requiring months of operation on coin cell batteries with real-time data synchronization\u003c\/li\u003e\n\u003cli\u003eIoT sensor networks including temperature, humidity, and motion sensors transmitting periodic readings to central hub or smartphone gateway\u003c\/li\u003e\n\u003cli\u003eIndustrial asset tracking and inventory management systems using Bluetooth beacons for indoor positioning and proximity detection\u003c\/li\u003e\n\u003cli\u003eMedical devices such as blood glucose monitors, pulse oximeters, and patient alert systems requiring reliable wireless connectivity with medical-grade reliability\u003c\/li\u003e\n\u003cli\u003eSmart home automation peripherals including wireless door locks, lighting controllers, and environmental sensors communicating with central hub\u003c\/li\u003e\n\u003cli\u003ePortable test and measurement instruments requiring wireless data logging and remote parameter adjustment via mobile applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eBegin by connecting the RN4020-V\/RM123 module to your host microcontroller using a standard UART interface at 115200 baud rate (default). Apply 3.3V regulated power supply with minimum 100 microfarad decoupling capacitor placed within 10mm of the VCC pin to ensure stable operation. The module enters command mode upon power-up, allowing you to configure device name, advertising parameters, and connection settings using ASCII command strings sent through the serial port. Refer to the RN4020 command reference documentation for complete AT-command syntax and configuration options.\u003c\/p\u003e\n\n\u003cp\u003eAfter initial configuration, place the module in advertise mode to broadcast its presence to nearby Bluetooth devices. When a central device initiates connection, the module automatically enters connected state and routes all incoming serial data to the remote device while forwarding received wireless packets to your microcontroller. Implement your application logic in the host microcontroller to parse incoming data, execute commands, and transmit responses back through the serial interface. Use the module's power management commands to enter sleep states during idle periods, waking only when connection requests arrive or at programmed intervals for periodic data transmission.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum range of the RN4020-V\/RM123 module?\u003c\/summary\u003e\n\u003cp\u003eThe RN4020-V\/RM123 achieves typical range of 50-100 meters in open space depending on antenna orientation, environmental obstacles, and transmit power settings. In indoor environments with walls and interference, practical range reduces to 20-50 meters. Range can be extended by increasing transmit power or implementing multi-hop mesh networking where intermediate nodes relay messages.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I update the firmware on the RN4020-V\/RM123 after deployment?\u003c\/summary\u003e\n\u003cp\u003eYes, the RN4020-V\/RM123 supports firmware updates via the serial UART interface using Microchip's bootloader protocol. You can implement over-the-air firmware updates by having your host microcontroller receive new firmware images wirelessly and relay them to the module in bootloader mode. This enables remote maintenance and feature additions without physical access to deployed devices.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I minimize power consumption for battery-powered applications?\u003c\/summary\u003e\n\u003cp\u003eOptimize power consumption by configuring the module to advertise at maximum intervals (e.g., 5-10 seconds instead of continuous), implementing connection parameter negotiation to extend connection intervals during idle periods, and using the sleep command to enter ultra-low power mode between transmissions. The module consumes approximately 15 milliamps during active transmission and 2 microamps in sleep mode, allowing you to achieve multi-month battery life with appropriate duty cycling.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs the RN4020-V\/RM123 compatible with iOS and Android devices?\u003c\/summary\u003e\n\u003cp\u003eYes, the RN4020-V\/RM123 implements standard Bluetooth 4.1 Low Energy protocol fully compatible with iOS 5.0 and later, Android 4.3 and later, and all modern Bluetooth-enabled devices. No special drivers are required on mobile platforms as the module appears as a standard BLE peripheral device discoverable through native Bluetooth settings.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy MICROCHIP RN4020-V\/RM123 BLUETOOTH MODULE, V4.1, 1MBPS Online in India\u003c\/h2\u003e\n\n\u003cp\u003ePurchase the MICROCHIP RN4020-V\/RM123 BLUETOOTH MODULE, V4.1, 1MBPS online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on MICROCHIP RN4020-V\/RM123 BLUETOOTH MODULE, V4.1, 1MBPS with fast shipping and expert support.\u003c\/p\u003e\n\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43847479034019,"sku":"TES-EV00006461","price":1799.88,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/Microchip-RN4020-VRMBEC133-30113925-01-314x252.jpg?v=1703854843","url":"https:\/\/www.theengineerstore.in\/zh-hant\/products\/microchip-rn4020-v-rm123-bluetooth-module-v4-1-1mbps","provider":"The Engineer Store","version":"1.0","type":"link"}