Module Features
• Small form factor, SMT module 25mm x 19mm
• Same footprint and pin-out as ETRX357
• Side Castellations for easy soldering and optical inspection
• Two antenna options: Integrated chip antenna or U.FL coaxial connector
• Based on 32-bit ARM® Cortex-M3
• Operation at 6, 12 or 24MHz
• Industry standard JTAG Programming and real time packet tracing via the Ember Debug Port
• Up to 512kB of flash and 64kbytes of RAM
• Lowest Deep Sleep Current of 1μA with retained RAM and GPIO and multiple sleep modes
• Wide supply voltage range (2.1 to 3.6V)
• Optional 32.768kHz watch crystal can be added externally
• Can act as an End Device, Router or Coordinator
• 24 general-purpose I/O lines including analogue inputs (all GPIOs of the EM358x SoC are accessible)
• Firmware upgrades via serial port or over the air using the Ember standalone bootloader
• Hardware supported encryption (AES-128)
• CE and UKCA; FCC and IC compliance, FCC modular approval
• Operating temperature range: -40°C to +85°C
• Long range version with a link budget of up to 124dB available in the same form factor

Radio Features
• Based on the Silicon Labs EM358x family of single chip ZigBee® SoCs
• 2.4GHz ISM Band
• 250kbit/s over the air data rate
• 16 channels (IEEE802.15.4 Channel 11 to 26)
• +3dBm output power ( +8dBm in boost mode)
• High sensitivity of -100dBm (-102dBm in boost mode) typically @ 1% packet error rate
• RX Current: 27mA, TX Current: 32mA at 3dBm
• Robust Wi-Fi and Bluetooth coexistence