Product Overview This is a cost-optimized Flippezero-compatible device, built based on open-source documentation with several hardware optimizations. To reduce cost and complexity, the iButton and high-frequency RF modules have been removed, while 315 MHz and 433 MHz RF are retained. An external SMA antenna interface is used, allowing users to choose their own antennas.

Key Features 315 MHz & 433 MHz RF support External SMA antenna connector (no fixed onboard antenna) Open-source compatible firmware NFC / RFID / Infrared / GPIO / U2F retained Bluetooth, LEDs, and power management tested and working Custom 3D-printed enclosure (PLA or PETG) Known issue: When using NFC emulation, if the reader's coil is small, precise alignment is required.

RF Performance (Real-World Test) Test conditions: open outdoor area, 7 cm 433 MHz antenna. Receive range (315 / 433 MHz): ≥ 250 m Transmit range (433 MHz): ≥ 250 m Transmit range (315 MHz): ~120 m Note: RF performance depends heavily on antenna choice and environment.

Power & Battery Battery: 7.4 Wh Li-ion Standby current: ~3 mA (≈ 1 month standby) Shutdown current: ~25 µA Known issue: GPIO 5 V output is always enabled and no longer software-controlled. This does not affect power consumption or normal operation.

Enclosure & Build Notes Custom-designed 3D-printed enclosure Printed in PLA or PETG May be less impact-resistant and heat-resistant than injection-molded cases Available in multiple colors The white version uses transparent PETG (visual clarity is limited)

Additional Information Test videos are available on Bilibili This product is intended for makers, researchers, and RF enthusiasts