Features

• I2C (2-wire) I/O expander PCA9554N
• 4 high current (10A) relays with Normally Open and Normally Closed contacts
• 4 extra digital I/O
• Address selector jumpers allow stacking up to 8 boards for 32 relays
• Screw terminal blocks for relay contacts
• 20-pin connector for interfacing to a variety of micro-controller boards
• Single operating voltage 5VDC, 75mA per energized relay coil
• Dimensions are 2.35 X 2.40 inches ( 5.97 X 6.10 centimeters )
• -20° to 85° C operating, -40° to +85° C storage temperature range
• Warranty Period: 3 years