Specifications

Revision 2.4 WebRelay-Quad™ Users Manual
1.4.2 Controlling High Power Devices
WebRelay-Quad™ can be used to control high power devices by using an external relay. In this
configuration, WebRelay-Quad™ does not control the load directly, but controls the external relay
and the external relay controls the load. This is illustrated below.
1.4.3 Using WebRelay-Quad™ Without a Computer
WebRelay-Quad™ can be used in conjunction with other ControlByWeb products such as
WebRelay™ or the Five- Input Module. This allows users to control devices at a remote location
by using switches or buttons instead of using a computer. The illustration below shows how three
switches can remotely control three indicator lights in a light tower at a remote location. This
configuration offers many possibilities in security and remote control. The inputs can be driven by
switches, sensors, or digital outputs from a PLC or automation controller.
Xytronix Research & Design, Inc. page 10
2 5 A m p
S o l i d S t a t e R e l a y
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