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Modbus Organization

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Type:  I/O Module
Description:  WebRelay-Quad is a compact four-relay module with a built-in web server. It can be controlled and/or monitored over any IP network including private networks, IP-based industrial control networks, and the Internet. Users can also use a custom application to control and monitor the device. WebRelay-Quad has four low-signal relays that can individually switch up to 1 Amp at 28V.
Connectivity:  Modbus TCP
Features:  No programming required; Can operate as Modbus TCP slave; 12 Amp relay contacts; Four independent, 28V 1A relays; ON/OFF and Pulse modes; Selectable TCP ports; DIN rail or wall-mountable; No special software or device drivers required
Specifications:  Power Requirements: Voltage 9-28VDC; Relay Contacts: SPDT, Max Voltage 28V Max Current 1A; Relay Control Options: ON/OFF or Pulse; Pulse Timer Duration: 100ms to 86400 Seconds (1 day); Network: 10/100 Base-T Ethernet; Operating Temperature: -20°C to 70°C (-4°F to 158°F); Size: 1.41 in (35.7 mm) wide X 3.88 in (98.5mm) tall X 3.1 in (78.0mm) deep; Weight: 5oz (142 grams); Enclosure Material: Lexan 940 (UL94 V0 flame rated); Electromagnetic Compliance: IEC CISPR 22, CISPR 24, FCC 47CFR15 (Class B), EU EN55024, EN55022; Product Safety: IEC 60950-1/EN60950-1