User Manual V3.1
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Relay Module
The relay is an electrically operated switch. It is a digital switch that can be used to control
high-voltage electrical devices, such as some home appliances. (up to a maximum of
250V).
*IMPORTANT: It can be dangerous to attach the relay module to an AC (110V/220V)
device. Our purpose for this module is to illustrate how home appliances can be
controlled. It is NOT necessary to connect a real appliance.
A ‘clicking’ sound can be
heard when the relay switches ON/OFF.
Image 3.4j – Relay Module
Module
Connect Type
Available Connectors
Relay Module
Digital IO
D12, D13, D14, D15
Electrical Characteristics
Parameter
Description
Contact Rating
NO:5A 250VAC/28VDC
NC:3A 250VAC/28VDC
Operate Voltage ≤ V dc
2.25
Release Voltage ≥ V dc
0.3
Block API
Set Relay Status
Use this code block to set the relay module's status to open or close.
Function
RelayControl(connName:ConnName , status:FanStatus): void
Parameters
‘ConnName’ is the connector's name.
‘status’ is the status of the relay open or close.
