Smart Board + 4-CH Relay Expansion Board + Bee Module Kit Set for Arduino UNO - Green + Yellow
External power voltage: 7~12V (>500mA); Relay converting voltage: AC 240V / DC 60V; Max. converting current: 5A; Contact point load: 1A / AC 250V 3A / AC 120V DC 24V; Relay number: 4; Wireless output interface: digital port 2 3 4 5