Overview of Characteristic

  • MIPS MCU with 4MB Flash and 8MB SRAM. Run on eCos
  • Support TCP/UDP/MQTT/HTTP/WebSocket Protocol
  • Support Modbus TCP to RTU, Modbus Master Function
  • Support RS485 to Ethernet/Wi-Fi Conversion, Serial Speed Upto 230400 bps
  • Support STA/AP/AP+STA Mode
  • Support Router or Bridge Network Working Mode.
  • Support 10/100M Ethernet Auto-Negotiation
  • Support Easy Configuration Through a Web Interface or PC IOTService Tool
  • Support Security Protocol Such As TLS/AES/DES3
  • Support  Web OTA Wirelss Upgrade  
  • Multiple Type of Different Power Input锛?/b>



  • Size: 102.03 x 64.95 x 27.50 mm (L x W x H) 锛孋45 rail installation

Sizing Table

Name Protoss-PW21  >>
Image Protoss-PW21
Processor 160MHz
Basic Frequency 448KB
Flash 4MB
Operating System eCos
Network Protocol TCP/UDP/MQTT/WebSocket/HTTP/Modbus TCP
Security Protocol TLS v1.2 AES 128Bit DES3
Network Mode STA/AP/STA+AP
Transmit Power 802.11b: +18dBm(Max.) 802.11g: +16dBm(Max.) 802.11n: +15dBm(Max.)
Receive Sensitivity 802.11b: -89dBm 802.11g: -81dBm 802.11n: -71dBm
Wi-Fi Security WEP64/WEP128/TKIP/ AES
Port Number 1 RS485
Data Bits 7锛?
Stop Bit 1锛?
Check Bit None锛孍ven锛孫dd
Baud Rate TTL锛?00bps~230400 bps
Flow Control No Flow control Software Xon/ Xoff flow control
Configuration Web CLI XML import Telnet IOTService PC Software
Size 102.03 x 64.95 x 27.50 mm
Storage Temp. -45 ~ 105掳C锛?5 ~ 95% RH
Input Voltage Protoss-PW21-H锛?100锝?40VAC@50锝?0Hz Protoss-PW21-M锛?9锝?8VDC@1A
Working Current ~200mA
Power <700mW
Wi-Fi Standard 802.11 b/g/n
Work Temp. -40 ~ 85掳C