FS-RX2A Pro Radio Receiver

The FS-RX2A Pro is a professional-grade 2-channel radio receiver designed for remote control applications, drone operations, and industrial automation systems. Engineers and technicians rely on this receiver for its stable signal acquisition, low latency response, and compatibility with standard 2.4GHz frequency-hopping spread spectrum protocols. This receiver solves critical challenges in wireless control systems by providing reliable signal decoding even in electromagnetically noisy industrial environments.

Product Overview

The FS-RX2A Pro Radio Receiver operates on the 2.4GHz ISM band with frequency-hopping spread spectrum (FHSS) technology, ensuring secure and interference-resistant signal transmission. The receiver features dual-channel output capability with independent PWM signal generation for each channel, allowing simultaneous control of two separate servo motors or electronic devices. The FHSS protocol automatically switches between 83 frequency channels at 2.5ms intervals, making it virtually immune to jamming and RF interference commonly found in manufacturing facilities and outdoor drone operations.

This professional-grade receiver incorporates a high-sensitivity superheterodyne front-end with automatic gain control (AGC), enabling reliable signal lock even at extended operating distances up to 400 meters in open terrain. The FS-RX2A Pro features a compact form factor measuring just 45x25x15mm, making it ideal for integration into tight spaces within aircraft fuselages, robotic platforms, and remote-controlled vehicles. Built-in failsafe protection automatically centers all channels to neutral position upon signal loss, preventing uncontrolled movement and ensuring operator safety in critical applications.

Key Specifications

Specification	Details
Product Type	2-Channel Radio Receiver Module
Brand	FlySky
Operating Frequency	2.4GHz ISM Band with FHSS
Frequency Hopping Channels	83 Channels at 2.5ms intervals
Output Channels	2 Independent PWM Channels
Signal Range	Up to 400 meters line-of-sight
PWM Output Resolution	1000-2000 microseconds (1500us neutral)
Receiver Sensitivity	-95dBm typical
Power Supply	4.8V-6.0V DC (2S LiPo compatible)
Current Consumption	80mA typical operating current
Dimensions	45mm x 25mm x 15mm
Weight	12 grams
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp

Key Features

• Dual-Channel Independent PWM Output: Two simultaneous control channels with separate 1000-2000 microsecond PWM signals for precise servo motor and electronic load control
• Frequency Hopping Spread Spectrum (FHSS) Technology: 83-channel automatic frequency switching at 2.5ms intervals provides military-grade interference immunity in congested RF environments
• Extended Operating Range: 400-meter line-of-sight transmission distance with -95dBm receiver sensitivity for long-distance drone and industrial remote control applications
• Automatic Failsafe Protection: Built-in signal loss detection automatically centers all PWM outputs to neutral position (1500us) within 1 second, preventing dangerous uncontrolled movement
• Compact Integration-Friendly Design: Miniature 45x25x15mm form factor with standard 3-pin servo connector for seamless integration into UAV frames and compact robotic platforms
• Low Power Consumption: 80mA typical operating current enables extended flight times and reduces battery load in portable remote control systems

Applications and Use Cases

• Drone and UAV Flight Control: Serves as the primary receiver module in quadcopters, fixed-wing drones, and aerial photography platforms requiring stable 2-channel control with failsafe protection
• Industrial Robotic Arm Control: Enables wireless operation of robotic manipulators and assembly line equipment in manufacturing facilities with real-time PWM signal feedback for position accuracy
• RC Vehicle Operation: Powers remote-controlled cars, boats, and ground vehicles with dual-channel steering and throttle control in outdoor and indoor racing applications
• Wireless Crane and Hoist Systems: Provides reliable remote control for overhead lifting equipment in warehouses and construction sites with automatic safety shutdown on signal loss
• Hobby and Educational Robotics: Ideal for STEM projects, robotics clubs, and educational institutions teaching wireless control systems and embedded electronics principles
• Emergency and Rescue Equipment: Enables wireless operation of search and rescue drones, surveillance platforms, and emergency response vehicles in disaster management scenarios

How to Use

To set up the FS-RX2A Pro Radio Receiver, first ensure your transmitter is bound to the receiver by pressing the bind button on the receiver for 3 seconds until the LED flashes rapidly, then activate bind mode on your compatible FlySky transmitter within 10 seconds. Connect the receiver to your power source (4.8V-6.0V DC) through the positive and negative pins while keeping the signal pin unconnected during binding. Once binding is complete, the LED will stabilize to a solid or slow-blinking state, confirming successful pairing. The two PWM output channels are now ready to control connected servo motors or electronic speed controllers through standard 3-pin servo connectors.

For optimal performance, mount the receiver away from metal surfaces and high-current power lines that generate electromagnetic interference. Connect your servo motors or ESCs to the two PWM output channels, ensuring correct polarity (red to positive, black to ground, yellow to signal). Test the failsafe function by powering on the receiver and transmitter, then switching off the transmitter to verify that all channels return to neutral position within 1 second. For long-range outdoor operations, maintain clear line-of-sight between transmitter and receiver, and avoid operating near 2.4GHz WiFi routers or microwave ovens that may cause temporary signal degradation.

Frequently Asked Questions

What is the difference between FS-RX2A Pro and standard FS-RX2A receivers?

The FS-RX2A Pro features enhanced receiver sensitivity of -95dBm compared to standard models, providing improved signal acquisition in challenging RF environments. The Pro version also includes optimized failsafe algorithms with faster response times and better compatibility with modern 2.4GHz transmitters featuring advanced frequency hopping protocols.

Can I use this receiver with non-FlySky transmitters?

The FS-RX2A Pro is specifically designed for FlySky 2.4GHz transmitters and uses proprietary FHSS protocol. It is not compatible with Futaba, Spektrum, or other brand transmitters. Ensure your transmitter is explicitly listed as compatible with FlySky FS-RX2A series receivers before purchase.

What happens if the signal is lost during operation?

Upon signal loss detection, the receiver automatically enters failsafe mode within 1 second and centers all PWM output channels to neutral position (1500 microseconds). This prevents uncontrolled movement of connected devices. The failsafe function is non-adjustable and always defaults to neutral for safety reasons.

Is the FS-RX2A Pro waterproof for outdoor use?

The receiver is not fully waterproof but features conformal coating for moisture resistance. For outdoor applications, we recommend using a protective enclosure or conformal coating to prevent water damage. Avoid direct immersion in water or exposure to heavy rain.

What power supply voltage should I use?

The FS-RX2A Pro operates on 4.8V to 6.0V DC. A 2S LiPo battery (7.4V nominal) can be used with a voltage regulator. Standard 5V USB power supplies are ideal for bench testing. Ensure stable power delivery without voltage spikes that may damage the receiver's internal circuits.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We 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.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy FS-RX2A Pro Radio Receiver Online in India

Purchase the FS-RX2A Pro Radio Receiver 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 FS-RX2A Pro Radio Receiver with fast shipping and expert support.

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