ETRX357 Telegesis Ltd, ETRX357 Datasheet - Page 8

• Manufacturer Part Number: ETRX357
• Description: MODULE ZIGBEE EM357 W/CHIP ANT
• Manufacturer: Telegesis Ltd

Specifications of ETRX357

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: ISM
• Power - Output: 3dBm
• Sensitivity: -100dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 27mA
• Current - Transmitting: 31mA
• Data Interface: PCB, Surface Mount
• Memory Size: 192kB Flash, 12kB RAM
• Antenna Connector: On-Board, Chip
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 920-1006-2

2.3 Declarations of Conformity
Telegesis (UK) Ltd will issue Declarations of Conformity for all ETRX3 series ZigBee® RF
Modules, which cover Radio Emissions, EMC and Safety. These documents will be available from
our website or on request
2.4 IEEE 802.15.4
IEEE 802.15.4 is a standard for low data rate, wireless networks (raw bit-rate within a radio packet
of 250kbps @2.4GHz) which focuses on low cost, low duty cycle, long primary battery life
applications as well as mains-powered applications. It is the basis for the open ZigBee
2.5 The ZigBee® Protocol
The ZigBee
over short to medium distances. The specification was originally ratified in December 2004, paving
the way for companies to start making low-power networks a reality.
ZigBee® uses an IEEE 802.15.4 radio specification running on the 2.4GHz band, plus three
additional layers for networking, security and applications. What makes the specification unique is
its use of a mesh network architecture which, in bucket chain style, passes data from one node to
the next until it lands at its destination. The network is self-healing and adapts its routing as link
quality changes or nodes move. Furthermore, nodes can be defined as End Devices which do not
act as routers, but can therefore be put into a low-power sleep state.
The enhanced version of the ZigBee
2006, adding new features and improvements to the only global wireless communication standard
enabling the development of easily deployable low-cost, low-power, monitoring and control
products for homes, commercial buildings and industrial plant monitoring. In 2007 the ZigBee
Alliance introduced the PRO featureset which offers advantages over earlier versions, including
The Telegesis AT Commandset, which by default ships on all ETRX3 series products is based on
the ZigBee PRO featureset. For more information on the Telegesis AT Commandset please refer
to the separate documentation at www.telegesis.com.
©2009 Telegesis (UK) Ltd
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Truly self healing mesh networking
Messages can now travel up to 30 hops
Source-Routing for improved point to multipoint message transmission
Improved security including Trust-Centre link keys
New message types and options
®
Protocol is a set of standards for wireless connectivity for use between any devices
®
standard (or ZigBee
- 8 -
ETRX35x Preliminary Product Manual
®
2006) was released in December
ETRX351 AND ETRX357
®
Protocol.