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productsMeshConnect EM357 High Temp Mini Modules

High Temp

Part Number



The MeshConnect™ EM357 High Temperature (High Temp) Mini Modules from California Eastern Laboratories (CEL) combine high performance RF solutions with the market's premier ZigBee® stack (EmberZNet PRO™) from Silicon Labs. These modules are specifically designed to address the thermal challenges associated with heat-intensive applications.

CEL's MeshConnect™ EM357 High Temp Mini Modules (ZICM357SP2-1-HT and ZICM357SP2-1C-HT) are based on the Ember EM357 IC. This IC is a single-chip solution, compliant with ZigBee specifications and IEEE 802.15.4, a complete wireless solution for all ZigBee applications.

These High Temp Mini Modules are suitable for applications such as solar and lighting controls where the temperature requirements may exceed the industrial range specs. The modules are designed and built using high temperature components to provide a robust solution without compromising performance in extreme environments.

CEL's MeshConnect modules are certified and qualified, enabling customers to reduce their development cost and risk, while reducing time to market.


Key Features

  • Operating Temperature: -40 ℃ to 110 ℃
  • Transmit Power: +20 dBm
  • Rx Sensitivity: -103 dBm
  • RF Link Budget: +123 dB

Key parameters

Part Number





Transceiver Chipset Ember EM357 Network Mesh Tx PowerOutput +20 dBm
Flash Memory on Chip 192 kB Software/ZigBee Stack EmberZNet™ PRO (ZigBee PRO) Rx Sensitivity -103 dBm
SRAM Memory on Chip 12 kB Temperature -40° to 110° C
Supplemental Flash Memory - Vcc 2.1 V to 3.6 V
I/O 22 Rx Current 34 mA
Tx Current 150 mA
Sleep/Supend Current 1 µA
Dimensions (Units in mm) 23.9 x 16.6 x 3.86


  • Operating Temperature: -40 ℃ to 110 ℃
  • Transmit Power: +20 dBm
  • Rx Sensitivity: -103 dBm
  • RF Link Budget: +123 dB
  • Advanced ARM® Cortex-M3 processor
    • 192 kB Flash; 12 kB SRAM
    • SPI Master / Slave, TWI and UART
    • Timers, Serial Wire / JTAG Interface
    • 5-channel, 14-bit ADC
    • Up to 22 GPIO Pins
  • Network Speed: 250 kbps
  • 16 RF Channels
  • Advanced Power Management
  • Software support:
    Industry's premier ZigBee PRO stack (EmberZNet PRO™)
  • Supports Mesh Networks
  • Integrated PCB Antenna
    • FCC, and IC Certifications
  • External Antenna
    • Optional RF port for External Antenna
    • FCC, IC Certifications for Nearson
      S181AH-2450S Antenna
  • Pin compatible Mini Modules:
    • ZICM357SPx, ZICM3588SPx, and ZICM357SPx-HT are pin compatible.


  • Commercial and Residential Lighting (Fixtures and Control)
  • Smart Energy (thermostats, meters, in-home displays and smart plugs)
  • Home Automation and Control (Energy Management, Security Devices and HVAC Controls)
  • Building Automation and Control
  • Solar Inverters and Control
  • General ZigBee Wireless Sensor Networking

CEL's MeshConnect certified and qualified modules enable customers to reduce their design and certification costs of development as well as development risk, while reducing time to market.