Data Sheet

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1. Product Description
1.1 Product Introduction
REX3B is a small, high-sensitivity low-power ZigBee module.Based on the latest EFR32 platform from
Silabs, the module complies with the IEEE 802.15.4 specification and the ZigBee 3.0 protocol standard. It has been
widely used in smart home, building automation, industrial monitoring and other fields.Using this module saves a
lot of time effort and cost for the user's development.
1.2 Product Applications
The REX3B module complies with the IEEE 802.15.4 specification and the ZigBee 3.0 protocol
standard, supports self-healing, self-organizing mesh networks, optimizes network traffic, and
reduces power consumption. This module supports the following application configurations:
 Standard ZigBee 3.0 features
 Transparent transmission: Users can perform program development according to our AT
command procedure
 Customization: Reliable and safe customized applications based on customers specific
requirements
Module applications include but are not limited to:
 Smart Home
 Lighting Control
 Security System
 Air Quality Testing
 Door Lock
 Electric curtains
 Air Conditioning, Floor Heating, Fresh Air Control
 Scene Automation
 Building Automation and Monitoring