This Grove-compatible relay is commonly known as a SPDT Relay 30A or 1RT relay, meaning it includes one common terminal, one normally closed terminal, and one normally open terminal. When the relay coil is not energized, the common terminal is connected to the normally closed terminal. When the coil is energized, the common terminal switches to the normally open terminal.
The StemAids Relay 1RT 30A Grove is suitable for controlled demonstrations involving lamps, fans, DC motors, buzzers, pumps, indicators, and automation outputs. For any AC mains or high-current wiring, installation should be done only by a qualified person with proper insulation, fuse protection, enclosure, and safety compliance.
Key Features
- Grove-compatible high-current relay module for STEM and automation learning
- 1RT / SPDT contact arrangement with Common, NO, and NC terminals
- Designed for switching loads up to 30A at 250VAC or 30VDC, depending on wiring and safety setup
- 5V DC relay coil suitable for Grove-compatible control systems
- Useful for Arduino, Raspberry Pi, robotics, IoT, and smart appliance demonstrations
- Digital input control for simple ON/OFF automation projects
- Screw terminal output for secure load-side connection
- Ideal for school labs, engineering labs, robotics labs, and training centers
Product Specifications
| Brand | StemAids |
|---|---|
| Product Name | Relay 1RT 30A Grove |
| Product Type | Grove-compatible high-current relay module |
| Relay Type | 1RT / SPDT relay |
| Contact Terminals | Common, Normally Open, Normally Closed |
| Control Voltage | 5V DC |
| Working Voltage Range | 4.75V–5.25V DC |
| Typical Current | Approx. 185 mA |
| Pull-In Voltage | Max. 3.75V DC |
| Contact Rating | Up to 30A at 250VAC / 30VDC |
| Operation Time | Max. 15 ms |
| Release Time | Max. 10 ms |
| Operating Temperature | -25°C to +70°C |
| Signal Type | Digital control signal |
| Interface Type | Grove 4-pin interface |
| Output Interface | Screw terminal for load wiring |
| Compatible Platforms | Arduino, Raspberry Pi with Grove interface, and Grove-compatible boards |
| Applications | High-current switching, automation, robotics, IoT, and appliance control demonstrations |
How to Use the Relay 1RT 30A Grove
- Connect the StemAids Relay 1RT 30A Grove to a Grove Base Shield, Grove Base Hat, or compatible digital output interface.
- Use a Grove cable to connect the relay module to a digital output port.
- Open Arduino IDE, Python environment, or another compatible programming platform.
- Set the connected digital pin as an output pin in the program.
- Send a HIGH or active signal to energize the relay coil.
- When energized, the relay switches the common terminal from NC to NO.
- Send a LOW or inactive signal to release the relay and return it to its resting contact state.
- Connect the relay logic with sensors such as PIR, temperature, light, moisture, button, or IoT modules.
- Use low-voltage demonstration loads for student projects unless supervised by a qualified electrical person.
Educational Benefits
The StemAids Relay 1RT 30A Grove helps students understand electromagnetic relays, digital output control, isolated switching concepts, normally open and normally closed contacts, automation logic, load control, and microcontroller-based switching. It gives learners a practical way to understand how small controller signals can operate larger electrical circuits through a relay interface.
Applications
- Arduino relay control projects
- Raspberry Pi automation experiments
- Smart appliance demonstration models
- Temperature-controlled fan projects
- Motion-triggered lamp or buzzer models
- IoT-based load switching projects
- Robotics output control experiments
- Pump and motor switching demonstrations
- Smart home automation learning kits
- STEM classroom electronics activities
Important Safety Note
The StemAids Relay 1RT 30A Grove is intended for educational, prototype, and controlled demonstration use. High-voltage AC mains and high-current load wiring can be dangerous. Such wiring should only be performed by qualified personnel using proper insulation, enclosure, earthing, fuse protection, wire gauge, strain relief, and applicable electrical safety standards. Students should use low-voltage demonstration circuits under teacher supervision.
Why Choose StemAids?
StemAids provides practical STEM, robotics, electronics, IoT, and automation learning modules for schools, colleges, training centers, and technical laboratories. The StemAids Relay 1RT 30A Grove is designed to make relay switching and automation learning simple, practical, and classroom-friendly. It is a useful module for institutions building Arduino labs, robotics labs, IoT learning spaces, embedded-system kits, and smart automation training setups.
FAQ
Q1. What is the StemAids Relay 1RT 30A Grove used for?
It is used to control high-current loads through a low-voltage microcontroller signal in Arduino, Raspberry Pi, robotics, IoT, and automation projects.
Q2. What does 1RT mean?
1RT refers to a single changeover relay contact arrangement, commonly similar to SPDT, with one common, one normally open, and one normally closed terminal.
Q3. Is this relay module compatible with Arduino?
Yes, it can be used with Arduino through a Grove Base Shield or compatible digital output connection.
Q4. Can this relay module be used with Raspberry Pi?
Yes, it can be used with Raspberry Pi when connected through compatible Grove interface hardware and suitable user-written code.
Q5. What is the contact rating of this relay?
The commonly documented Grove SPDT Relay 30A contact rating is up to 30A at 250VAC or 30VDC, subject to proper wiring, safety enclosure, and load conditions.
Q6. What is the relay coil voltage?
The relay coil is commonly rated for 5V DC control in Grove-compatible relay modules.
Q7. Can students wire AC mains directly?
No. AC mains or high-current wiring should be handled only by qualified personnel using proper insulation, enclosure, fuse protection, earthing, and electrical safety practices.
Q8. What projects can students make with this relay module?
Students can make smart lamp controls, temperature-controlled fans, motion-triggered alarms, IoT load switches, pump-control demonstrations, robotics output controls, and smart home automation models using safe low-voltage demonstration loads.
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