Adafruit
Bluefruit LE Sniffer - Bluetooth Low Energy (BLE 4.0) - nRF51822 - Firmware Version 2 (ID: 2269)
£24.60Unit price /UnavailableAdafruit
ESP32-S3 Feather with STEMMA QT / Qwiic - 8MB Flash No PSRAM
£16.80Unit price /UnavailableSparkFun
SparkFun Pro nRF52840 Mini - Bluetooth Development Board (DEV-15025)
£36.32Unit price /UnavailableAdafruit
Bluefruit LE Friend - Bluetooth Low Energy (BLE 4.0) - nRF51822 - v3.0 (ID: 2267)
£19.80Unit price /Unavailable