Ai-Thinker NF-01-S Si24R1 2.4GHz Wireless Transceiver Module The Ai-Thinker NF-01-S is a compact 2.4GHz wireless transceiver module built around the Si24R1 RF chip. It uses a DIP-8 module format, onboard PCB antenna, and SPI host interface, making it suitable for embedded products that need a small, low-power 2.4GHz data link. According to the official NF-01-S specification, the module supports GFSK / FSK modulation, 2Mbps / 1Mbps / 250kbps data rates, 126 RF channels, RSSI signal-strength detection, up to 7dBm transmit power, and -94dBm receive sensitivity at 250kbps. The supply range is 1.9V to 3.6V with 3.3V typical operation. For related OpenELAB wireless modules and accessories, compare the Ai-Thinker NF-03 Si24R1 2.4GHz Module, NRF24L01 2.4GHz Wireless Module, NRF24L01 2.4GHz Wireless Transceiver Module, NRF24L01+PA+LNA RF Transceiver Module, and Nano IO Shield with NRF24L01 Socket. Technical Specifications Parameter Value Brand Ai-Thinker Model NF-01-S OpenELAB SKU AT-NF-01-S Product Type 2.4GHz wireless transceiver module RF Chip Si24R1 Package DIP-8 Module Size 28.6 x 15.3mm, +/-0.2mm Antenna Interface Onboard PCB antenna Operating Frequency 2.4GHz to 2.525GHz, adjustable in 1MHz steps RF Channels 126 channels, 1MHz channel spacing Modulation GFSK / FSK Data Rates 2Mbps, 1Mbps, and 250kbps Host Interface Four-wire SPI SPI Clock Reference Maximum SPI rate not greater than 10MHz according to the official specification Transmit Power Up to 7dBm Receive Sensitivity -94dBm at 250kbps RSSI Signal received strength detection supported Packet Length 1 to 32 bytes per packet FIFO 3-level FIFO listed for transmit and receive paths Reference Test Range 100m in sunny, unobstructed conditions at maximum transmit power Supply Voltage 1.9V to 3.6V, 3.3V typical Power-Off Current 0.7uA reference value Standby Current 15uA reference value Receive Current 15mA at 2Mbps reference value Transmit Current 25mA at 7dBm reference value Pins VCC, GND, CSN, CE, MOSI, SCK, IRQ, and MISO IRQ Behavior Interrupt output, low-level active CE Behavior CE low level places the module in standby mode according to the official pin table Operating Temperature -20C to 70C Storage Temperature -40C to 125C Integration Notes & Hardware Guidance Power Supply - Keep VCC within 1.9V to 3.6V. Excessive voltage can damage the module. Ripple Control - Use a low-ripple supply and reserve filtering with ceramic capacitance, tantalum capacitance, or inductance as needed. Grounding - Use careful single-point grounding for the module ground reference and separate noisy circuits where possible. Antenna Clearance - Keep the onboard PCB antenna exposed and away from metal shells, relays, and other components that can reduce RF performance. Interference Planning - If other wireless modules are installed in the same product, plan frequency use and shielding to reduce co-channel interference. Crystal Placement - Increase spacing from nearby crystal oscillators to reduce harmonic and intermodulation interference. SPI Routing - Keep CSN, CE, MOSI, MISO, SCK, and IRQ traces short and confirm host IO voltage compatibility before production. Range Validation - Validate real-world range with the final enclosure, host board, antenna orientation, channel plan, and selected data rate. ESD Handling - Treat the module as an electrostatic-sensitive RF device during storage, assembly, and testing. Packing List 1 x Ai-Thinker NF-01-S 2.4GHz Si24R1 Wireless Transceiver Module FAQ Q: Which RF chip does NF-01-S use?A: The official specification lists the Si24R1 RF chip. Q: What interface does the module use?A: NF-01-S uses a four-wire SPI interface with CSN, MOSI, MISO, and SCK, plus CE and IRQ control pins. Q: What data rates are supported?A: The official specification lists 2Mbps, 1Mbps, and 250kbps data rate support. Q: What frequency range does it cover?A: The module operates from 2.4GHz to 2.525GHz with 1MHz adjustable channel spacing. Q: What is the recommended supply voltage?A: The supported range is 1.9V to 3.6V, with 3.3V listed as the typical value. Q: Does it include an antenna?A: Yes. NF-01-S uses an onboard PCB antenna. Q: What should I check before PCB production?A: Confirm supply stability, host IO voltage, SPI routing, antenna clearance, nearby wireless interference, and ESD protection.
Related
Related
Related
Related