Supports for A+/B+/2B/3B/3B+/4B/5/Zero/Zero W/Zero 2W
High quality relays, loads up to 5A 250V AC or 5A 30V DC
Photo coupling isolation, prevent interference from high voltage circuit
Standard rail mount bottom case
Onboard for indicating relays status

Relay control pin selection jumper, allows to control the relays by custom pins other than the default pins
Reserved control Interface, allows to work with controllers like PLC
Comes with development resources, including examples in wiringPi, bcm2835, python, python-bottle (webpage control), and crontab (cron job)
Power supply voltage:5V
Trigger signal:3.3V/5V
Relay channels:8-ch
Contact form:SPDT-NO,NC
Closed current:6mA (per channel)
Connector:screw terminal block
Mounting hole size:3.0mm
Due to different batches, the appearance, color and printed words of the product , which will not affect the use.
Colour:Blue
Material:PCB
Size:232 x 72 (mm)

Package Contents:
1 * Relay Extention Board