2 Channel 5V Active Low Relay Module

Features

5VDC two channels relay interface board
From our tests, the control signal is 3.3V compatible, yet the VCC needs to be 5VDC. So you can use Raspberry Pi's GPIO to activate or deactivate the relay.
Active Low configuration
Signal Indicator LED for each Relay
Relay Maximum Current Rating: 10A
Relay Maximum Voltage Rating: AC 250V / DC 30V
Can control various appliances with large current and high voltage
Can be controlled directly by microcontrollers such as Arduino, 8051, AVR, PIC, DSP and ARM
Build-in 2 units of Opto-Isolator IC 817C