[Chip solution]：Si24R1
[Communication interface]：SPI
[Transmission power]： 27dBm
[Reference distance]：4km
[Product size]：18*14.5mm
[Product weight]：1.34±0.1g
[Introduction]：The E01C-2G4M27SX is an ultra-small 2.4GHz SMD wireless module with a maximum transmit power of 500mW based on the Si24R1 core.The module has a built-in power amplifier (PA) and low noise amplifier (LNA), which enables the maximum transmit power of 500mW and further improves the reception sensitivity,and significantly improves the overall communication stability compared to products withoutpower amplifier and low noise amplifier.The product uses an industrial grade high precision 16MHz crystal.
Practical Application Scenarios
1. Ultra-Long-Range Industrial Drone Telemetry and Real-Time UAV Flight Control
In commercial drone inspections and agricultural spraying applications, flight control boards require ultra-lightweight, high-speed telemetry links to transmit flight vectors, battery status, and GPS spatial coordinates. The E01C-2G4M27SX module integrates directly onto compact avionics PCBs via its 18x14.5mm SMD stamp holes. By selecting the 250kbps air data rate and utilizing the high-power PA front-end, developers establish a rock-solid 4km bi-directional command link that bypasses typical 2.4GHz ground clutter interference, enabling secure automated flight paths.
2. High-Speed, Low-Latency Wireless Audio and Live Event Commentary Systems
Professional sound reinforcement systems and digital intercom headsets require micro-second level real-time audio broadcasting without acoustic packet dropping. Operating at the maximum 2Mbps air data rate over its high-speed hardware SPI interface, this module accommodates massive raw bandwidth pipelines. The built-in Low Noise Amplifier (LNA) significantly enhances reception reliability, allowing multi-channel uncompressed wireless audio signals to pass flawlessly across performance stages or industrial factory floors without multi-path fading disruptions.
3. Smart Warehouse Automated Guided Vehicle (AGV) Centralized Dispatch Networks
Logistics centers rely on fleets of Automated Guided Vehicles (AGVs) requiring uninterrupted wireless links with host computing centers during sorting loops. Embedded inside the AGV's master microcontroller boards, this transceiver acts as a high-speed telemetry endpoint. When a fleet passes through heavily shielded metallic racking zones, the module's 27dBm output capability provides excellent concrete-penetrating performance, ensuring central MQTT/TCP dispatch networks maintain continuous tracking loops over long factory floor expanses.
FAQ Section
1. Is the E01C-2G4M27SX fully protocol-compatible with existing Nordic nRF24L01P architectures?
Yes, the underlying RF core inside the Si24R1 chip solution is completely register-compatible with standard nRF24L01P transceiver series. Firmware engineers can drop this module directly into legacy embedded software frameworks, using the same 4-wire SPI commands, dynamic payload features, ShockBurst automatic acknowledgment packets, and multi-channel data pipelining. This allows for zero-cost code porting when upgrading legacy short-range systems to this high-power 27dBm variant.
2. What power supply decoupling strategy is mandatory to maintain stable PA performance during packet bursts?
Because the onboard Power Amplifier spikes transient current demands up to hundreds of milliamperes during the packet preamble phase, power rail integrity is critical. B端 developers must position a high-quality 10uF tantalum capacitor combined with a 100nF ceramic decoupling capacitor as close as physically possible to the module's VCC and GND pins. A dedicated low-dropout (LDO) linear regulator should power the RF section independently from the main MCU to isolate digital switching noise from the sensitive LNA components.
3. How should the external antenna and IPEX interface coax layout be designed to minimize RF signal loss?
The module utilizes a 1st generation IPEX base matched to a 50 Ohm nominal RF characteristic impedance. When routing the micro-coaxial cable to the enclosure panel bulkhead, engineers must avoid sharp routing bends and keep the cable away from high-frequency digital signal tracks (such as SPI clock lines or fast PWM outputs). The external antenna must be placed far away from internal metallic structural frameworks, copper PCB ground pours, and switching power supplies to maintain optimal omnidirectional radiation efficiency.
4. How do you configure the air data rate over the SPI bus to achieve the maximum 4km operational link budget?
The communication distance is inversely proportional to the air data rate configuration. To maximize reception sensitivity and achieve the rated 4km link range, the module's internal RF configuration register (specifically the RF_DR bits) should be configured to the lowest 250kbps speed setting. This increases the packet processing gain of the receiver. Higher rates like 1Mbps or 2Mbps should be reserved for short-range, ultra-low-latency data bursts or high-throughput audio streams.
