Zhejiang Rexense Technology Co., Ltd.
Main products:ZigBee Module,Smart Home,Wireless Module
Contact Us
  • Contact Person : Mr. Hung Nick
  • Company Name : Zhejiang Rexense Technology Co., Ltd.
  • Tel : 86-571-85395623
  • Fax : 86-571-87987620
  • Address : Zhejiang,Hangzhou,Room 105, No.7 Cuibai Road, Xihu District
  • Country/Region : China
  • Zip : 310012

Em351 Ultra Compact 2.4GHz ZigBee Wireless Module (1mW, SMD), ZigBee Pro, Line of Sight up to 300m

Em351 Ultra Compact 2.4GHz ZigBee Wireless Module (1mW, SMD), ZigBee Pro, Line of Sight up to 300m
Product Detailed
1. State-of-art Em35x ZigBee chip adopted 2. Industry-leading 32-bit Cortex-M3 processor 3. Stable ZigBee Pro Protocol 1. Introduction

Rexense Ultra-Compact ZigBee Module is a type of surface mounted module that enables users to implement ZigBee/IEEE 802.15.4 compliant solution which satisfies the needs of low-cost, low-power wireless sensor networks. The module is easy-to-use, saves board space and offers reliable delivery of data between devices.

Rexense Ultra-Compact ZigBee Module operates within the ISM 2.4GHz frequency band. The module’s default configuration supports a wide range of data system applications. The module is embedded with 32-bit wireless microcontroller to offer a wide variety of solutions.

2. Product Features

State-of-art ZigBee chip adopted

Industry-leading 32-bit ARM® CortexTM-M3 processor

Stable and reliable ZigBee protocol stack embedded

Easy to implement ZigBee technology integration for hardware equipment manufacturers

Wide communication range and high network reliability

3. Specifications

Table 3-01: Specifications of Ultra-Compact ZigBee Module (SMD)

Model Name



Ultra-Compact ZigBee Module (SMD)

Basic Specification

Operating Frequency Band

ISM 2.4GHz

Operating Temperature

-40 ~ 85°C

Antenna Interface

U.FL Jack ; Silvered Antenna

Dimensions (L*W*H)


RF Features

Maximum Transmit Range

150m (PCB Antenna)

200m (SMA Antenna)

Maximum Transmit Power Output


RF Data Rate


Serial Data Rate (software selectable)

1200-230400 bps

RX Sensitivity (1% packet error rate)

-99 dBm

Electrical Features

Supply Voltage


Operating Current(Transmit)


Operating Current(Receive)


Power-down Current


Interface Features

24 GPIO ports;

4 interrupt ports;

1 serial ports UART supported; 1 SPI and I2C supported;

6x12 bits A/D ports.

Network Features

Supported Network Topologies

Star; Tree; Mesh

Number of Channels

(software selectable)

16 Direct Sequence Channels

4. Product Pictures

REX3U51 REX3U51 (with Antenna Kit)

5. Pin Description

6. Outline Drawings7. Ordering Information






Enhanced ZigBee Module (DIP)

With separated shielding case; U.FL Jack; STM32W64 ZigBee chip


Standard ZigBee Module (SMD)

With integrated shielding case; U.FL Jack; STM32W61 ZigBee chip


Em351 Ultra Compact 2.4GHz ZigBee Wireless Module (1mW, SMD), ZigBee Pro, Line of Sight up to 300m

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