Raspberry Pi ® rb-LK-SET Mini PC ARM1176JZFS (1x 700 MHz) 512 MB rb-LK-SET 用户手册

产品代码
rb-LK-SET
下载
页码 3
Relay Module  
Introduction 
The Linker Relay Module is a digital normally-open switch. Through it, you can control 
circuit of high voltage with low voltage, say 5V on the controller. There is an indicator LED 
on the board, which will light up when the controlled terminals get closed.