ZigBee Technology - Wireless Meshing Module

ETRX2 Ember EM250 Based Module

The Telegesis ETRX2 module is a low power, 2.4GHz ISM band transceiver, based on the Ember EM250 single chip ZigBee / IEEE802.15.4 solution. It has been designed to be integrated into any device without the need for RF experience and expertise. Utilizing EmberZNet2.2 meshing technology, the ETRX2 enables you to add powerful wireless networking capability to your products and quickly bring them to market. The module’s unique AT-style command line interface allows you to quickly integrate meshing radio technology without complex software engineering.

ZigBee Module Features

• Small form factor, SMT module 37.75 x 20.45mm
• Optional board-to-board or board-to-cable connector
• 3 antenna options: Integrated ceramic antenna, Hirose U.FL coaxial connector or single port 50Ω pad
• XAP16b microcontroller with non-intrusive debug interface (SIF)
• 128k flash and 5kbytes of SRAM
• UART interface with DMA, optional software support for hardware I2C and SPI
• Wide supply voltage range (2.1 to 3.6V)
• Module ships with standard Telegesis AT-style software interface based on the mesh stack of EmberZNet 2.2.
• Can act as an End Device, Router or Coordinator
• 12 general-purpose I/O lines and 2 analogue inputs (all 17 GPIOs of the EM250 are accessible)
• Supports 4 different power modes for extended battery life
• Current consumption below 1uA in deep sleep mode with self wakeup
• Firmware upgrades via RS232 or over the air (password protected)
• Hardware supported encryption (AES-128)
• Tested for CE and FCC compliance (with integrated antenna), FCC modular approval
• Operating temperature range: -40°C to +85°C
• Options include: On board, low power voltage regulator, DC/DC regulator and watch crystal

Radio Features

• Based on the Ember EM250 single chip ZigBeeTM/IEEE802.15.4 solution
• 2.4GHz ISM Band
• 250kbit/s over the air data rate
• 16 channels (802.15.4 Channel 11 to 26)
• +3dBm output power ( +5dBm in boost mode)
• High sensitivity of -98dBm typ. At 1% packet error rate
• Hardware acceleration for IEEE 802.15.4 compliant transmissions

Example AT-Style Commands

ZigBee Module Documentation:

To dowload all documentation click here

Download Software:

To download the Telegesis Terminal software for the ETRX1DVK Development Kit, click here

Suggested Applications

• AMR – Automatic Meter Reading
• Wireless Alarms and Security
• Home/Building Automation
• Wireless Sensor Networks
• Industrial Controls
• ZigBee™ systems
• PC Peripherals
• IEEE 802.15.4 Systems
• Item Tracking

Example AT-Style Commands

• AT+SN Search meshing and discover devices
• AT+EP <address> Establish pairing with another meshing with <address>
• AT+AP Accept Pairing from a Peer Device
• AT+AP <address> Unpair

At Power-up the last configuration is loaded from S-Registers. This can eliminate the need for an additional Host Controller.

ETRX2 - standard module

ETRX2HR - Hirose connector in place of integrated antenna

Actual size - 37.75 x 20.45mm

Development Kit