Wi-Fi 16 Relay Board PCB – Mod Bus TCP, Timers



A sixteen channel ModBus TCP/UDP relay board with Wi-Fi 802.11 interface. The relays can be controlled manually with the stand-art coils commands they also can act like timers. Supported by many mod-bus applications and professional software. This is the PCB version.


  • Communication protocol: ModBus TCP / ModBus UDP;
  • 16 SPDT relay channels (the type depends on the stocks quantity in our store):
  • TONGLING – JQC-3FF-S-Z (10A / 250VAC, 15A / 120VAC, 10A / 28VDC)
  • SUNHOLD – RAS xx15 (10A / 250VAC, 15A / 120VAC, 15A / 24VDC)
  • 16 independent timers with resolution 100ms;
  • Option for loading relays states on boot: last saved, predefined or OFF;
  • Supply source is selectable during purchase:
  • 12V DC / 600mA;
  • 24V DC / 400mA;
  • Wireless Wi-Fi 802.11 b/g/n standart;
  • Supported Wi-Fi modes: AP (Access Point), STA (Station) and AP+STA (Access Point + Station);
  • Supported Wi-Fi encryption modes:
  • WEP;
  • WEB server configuration of system parameters;
  • WEB server secure login authorization;
  • Stand art network protocols: DHCP, DNS, ICMP (ping);
  • Led indicators: Relays, Power ON, Wi-Fi link, Ready Status;
  • High quality PCB: FR4 / 1.5mm / two layers / metalized holes / HAL / white stamp / solder mask / extra PCB openings for better voltage isolation / doubled PCB tracks for better voltage isolation;
  • Operating temperature range: from 0 ºC to +70 ºC;
  • Dimensions: W=82mm x L=203mm x H=24mm;
  • Supported by various third parity software (Android, iOS, Windows);
  • Control from command line tool;

Application Examples

  • Home Automation
  • Industrial Automation’s
  • HVAC