Relay Grove

The Relay Grove module lets an Arduino, Raspberry Pi or other microcontroller switch a separate, higher-power circuit with a single digital signal. It works as a normally open switch: when the signal pin goes HIGH the relay closes and an on-board LED lights, and when it goes LOW the circuit opens again. The Grove connector plugs straight into a Grove Base Shield, so the control side needs no breadboard or soldering.

Relay Grove Specifications

• Operating voltage: 3.3–5 V (V1.2), so it works with 3.3 V and 5 V boards
• Operating current: about 100 mA with the relay on
• Max switching voltage: 250 VAC or 30 VDC
• Max switching current: 5 A
• Contact type: normally open, closes when SIG is HIGH
• Relay life: about 100,000 cycles
• Interface: Grove 4-pin connector with one digital signal pin

Relay Grove Applications

• Switching lamps, fans and pumps from Arduino code
• Home automation and smart plug projects
• Timers, thermostats and plant watering systems
• Grove classroom kits and STEM projects

What's in the Box

• 1 × Relay Grove module

Tip: Plug the module into a digital Grove port and use digitalWrite(pin, HIGH) to close the relay. Keep the load within 5 A, and take great care with mains voltage: wire it only with the power off and keep all live connections insulated.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.