The 12V Single-Channel Delay Timer Relay Module is a versatile, programmable cycle timer designed for automated repetitive switching of electrical devices. It combines a high-current relay with an adjustable cycle timer, digital display, and onboard buzzer, making it an ideal solution for applications requiring periodic on/off operation — from industrial automation to home automation and DIY projects.
The module operates from a 12V DC power supply, making it compatible with common 12V systems, battery-powered setups, and automotive applications. The onboard high-current relay is rated for 10A at 250V AC or 30V DC, capable of directly switching lamps, motors, pumps, solenoids, and other loads.
The module’s primary function is ON/OFF repeat mode — the relay cycles between ON and OFF states at user-defined intervals continuously. This makes it perfect for applications such as flashing lights, periodic pump operation, intermittent fan control, and cycling test equipment. The ON time and OFF time are independently adjustable, giving you full control over the duty cycle.
The digital LED display shows the current time settings and operating status, making configuration straightforward. The onboard buttons allow you to adjust ON time, OFF time, and other parameters without any external programmer or computer. The onboard buzzer provides audible feedback during configuration and can also be used to signal the start or end of each cycle.
The module features screw terminals for secure connections for power, trigger input (if used), and relay output. The compact form factor with mounting holes makes it suitable for embedding into control panels, equipment enclosures, and custom projects.
The module is widely used in industrial control, home automation, aquarium and hydroponics systems, lighting effects, motor cycling, and DIY timing projects. Its simple operation and versatile cycling capability make it suitable for both beginners and experienced users.
Whether you are automating a hydroponic irrigation system, creating a flashing light effect, or cycling a pump for aeration, the 12V Single-Channel Delay Timer Relay Module provides a reliable, programmable solution. It is suitable for individual makers, students, and businesses purchasing in bulk for product development or educational programs.
Features
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12V DC operation — Compatible with common 12V systems and battery setups
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High-current relay — 10A at 250V AC / 30V DC switching capacity
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ON/OFF repeat cycle mode — Continuous cycling at user-defined intervals
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Independent ON and OFF time adjustment — Full control over duty cycle
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Digital LED display — Shows time settings and operating status
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Onboard buzzer — Audible feedback during configuration and operation
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Onboard buttons — Configure modes and timings without external tools
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Screw terminals — Secure connections for power and load
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Compact form factor — Suitable for embedding into enclosures and panels
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Wide application range — Industrial control, home automation, aquarium, lighting
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Input Voltage | DC 12V |
| 2 | Relay Rating | 10A at 250V AC / 30V DC |
| 3 | Channels | 1 (single-channel) |
| 4 | Timing Mode | ON/OFF repeat cycle |
| 5 | ON/OFF Adjustment | Independent, adjustable |
| 6 | Display | Digital LED display |
| 7 | Buzzer | Onboard, audible feedback |
| 8 | Terminal Type | Screw terminals |
