12V Sound-Activated Relay Module | Voice Control Delay Switch
12V Sound-Activated Relay Module | Voice Control Delay Switch
12V Sound-Activated Relay Module – Voice Control Delay Switch Board
Upgrade your corridor, hallway, or workspace with this compact 12V Sound-Activated Relay Module. Designed as a smart, hands-free switching solution, this PCB relay board detects sound signals and triggers a timed delay relay output — perfect for automatic lighting control, clap-activated switches, sound-triggered automation projects, and DIY electronics builds.
Key Features
- Sound Detection Trigger: Built-in sound sensor detects voice or clap signals and activates the relay output automatically.
- Delay Induction Function: Relay stays activated for a set delay period after sound detection, making it ideal for corridor lights or stairway lighting automation.
- 12V DC Operation: Runs reliably on a standard 12V DC power supply, compatible with a wide range of low-voltage automation setups.
- High Rated Capacity: Supports loads greater than 1000VA, suitable for a broad range of household or workshop electrical loads.
- Compact PCB Design: Lightweight red PCB board is easy to integrate into enclosures, panels, or DIY project housings.
- Low-Voltage Safe: Operates below 50V AC or 75V DC on the control side, meeting EU LVD low-voltage safety requirements.
- No High-Concern Chemicals: Free from restricted high-concern chemical substances.
Specifications
| Operating Voltage | 12V DC |
| Rated Capacity | >1000VA |
| Control Voltage | Below 50V AC / 75V DC |
| Board Material | PCB |
| Color | Red |
| Country of Origin | Made in China |
Common Applications
- Corridor and hallway automatic light switching
- Clap-on / clap-off light control
- Sound-triggered DIY automation systems
- Smart home electronics prototyping
- Arduino and microcontroller relay experiments
Package Included
- 1 × 12V Sound-Activated Relay Module Board
Please Note: Due to screen and lighting differences, actual product color may vary slightly from photos. Please allow a tolerance of 1mm–1cm due to manual measurement.
For guidance on safe electrical wiring and low-voltage electronics, refer to the U.S. Consumer Product Safety Commission – Electrical Safety and OSHA Electrical Safety Standards.
Frequently Asked Questions
Q: What power supply does this 12V sound-activated relay module require?
A: This relay module requires a standard 12V DC power supply. Ensure your power source can supply adequate current for the relay and any connected load. The control side operates safely below 50V AC or 75V DC.
Q: Can this sound relay module be used with Arduino or Raspberry Pi projects?
A: Yes! This relay board is popular for DIY electronics and maker projects. It can be integrated into Arduino, Raspberry Pi, and other microcontroller-based automation systems as a sound-triggered switching component. Check your microcontroller's output voltage compatibility before wiring.
Q: How does the corridor delay function work?
A: When the onboard sound sensor detects a sufficient noise level (such as a clap or voice), the relay is triggered and remains activated for a preset delay period. This is ideal for corridor or stairway lights that should stay on for a short time after being activated, then automatically turn off — providing hands-free, energy-efficient control.
Q: What types of loads can this relay module control?
A: The module is rated for loads greater than 1000VA, making it suitable for controlling a wide range of standard household lighting circuits and other compatible electrical loads within the supported voltage range.