KAGA FEI ES4L15MA1 is a ridiculously small, ready-to-use BLE 6.0 module based on Nordic nRF54L15 SoC - CNX Software

Japanese company KAGA FEI has introduced another incredibly small ES4L15MA1 Bluetooth LE 6.0 module based on Nordic Semiconductor’s nRF54L15 ultra-low-power Cortex-M33 wireless MCU.Launched alongside the larger EC4L15MA1 module, the ES4L15MA1 module appears to be based on the same hardware as the ES4L15BA1 “world’s smallest module” unveiled in 2024 with an 8.55 x 3.25 x 1.00 mm form factor. The main difference is that the new modules come with ready-to-use embedded software providing a command-based API via UART to shorten product development cycles and lower development costs for IoT devices relying on Bluetooth LE 6.0 connectivity.ES4L15MA1 (left) and EC4L15MA1 (right) Bluetooth LE 6.0 modules

KAGA FEI ES4L15MA1 specifications:

SoC – Nordic Semiconductor nRF54L15

MCU cores

Arm Cortex-M33 with Arm TrustZone @ 128MHz