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This product is currently out of stock
Item is available at 122003Change
You can place a return request within 10 days of order delivery.
In case of damaged/missing product or empty parcel, the return request should be filed within 2 days of delivery.
The relays need 5V to close / open. You could use the 5V pin on the RPi but it may be safer to use an external 5V supply.
The relays can switch 250VAC 10A or 30VDC 10A. BEWARE of mains voltages.