DESCRIPTION:

• Arduino dedicated Relay Shield, 4-way 3A relay control, xbee wireless module. 
• Independent external power supply and optocoupler isolation, effectively avoid electromagnetic interference devices charged. 

• External power supply voltage: 7 ~ 12V (> 200mA) 
• Maximum switching voltage relay: 240VAC/60VDC 
• Relay Max Switching Current: 5A 
• Contact load capacity: 1A 250VAC, 3A 120VA / 24VDC 
• Relay: 4 
• Wireless output interface: (serial) xbee / Bluetooth Bee / Wireless Programming Module 
• Arduino occupied port: (relay) digital ports 2,3,4,5, (wireless module) digital ports 0,1 

​FEATURES:

• Arduino uno, Arduino Mega,
• 4 mechanical relays with photo-coupled circuit
• Equipped with screw holes for easy installation
• Light weight
• Small form factor
• Native Arduino compatibility
• Extendible