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The Arduino Relay Shield from Seeed Studio gives you 4 relays that will switch 7A at 35V DC each, easily enough for most applications. Screw terminals are provided for the connections to the device being switched and an LED indicator shows the status of each relay's normally open (NO) contacts. Your Arduino can control the board via 4 digital output pins giving you the opportunity to control multiple relay boards. PCBs with high voltage electricity can be dangerous, please take precautions to prevent shocks and short circuits. It is recommended that you apply two layers of insulating tape to the top of the Arduino's USB connector to prevent short circuits.
4 x relays with 1 x NO and 1 x NC contacts each
4 digital outputs used for each board
LED indicators on each relay
Screw terminals for switched devices
Seeed provide technical documentation, example projects and software libraries on their product pages. if you require this information please visit this product's page.
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