Features:
DC12V 8 channel relay interface board.
The 8 channels are optically isolated, safe and reliable.
Each relay has normally open and normally closed contact.
Standard interface that can be controlled directly by microcontroller.

Specifications:
Material: PCB
Type: 3 types(optional)
type 1: relay board
type 2: relay board & promini board
type 3: relay board & promini board & download cable
Operating voltage: DC12V
Item weight: 131g / 4.62ounce
Package weight: 135g / 4.76ounce
Package size: 120*62*19mm / 4.72*2.44*0.75in

Packing List:
1 * Relay Module