TRM01 Delay Timer Relay Module 5V 12V 24V – 555 Timer Switch

TRM01 Delay Timer Relay Module – Self-Locking, 4-Mode Time Switch

The TRM01 Delay Timer Relay Module is a versatile, high-quality time-switch board built around a reliable 555-timer circuit. Designed for makers, hobbyists, and engineers alike, it supports four pre-set operating modes and allows fully customisable delay timing between 0.1 and 120 seconds — all with a clean, simple interface and non-volatile memory so your settings are never lost on power-down.

Available in three working voltage versions (DC 5V, 12V, and 24V), this compact module slots into a wide range of automation, home-lab, and DIY control projects without any complicated setup.

Made in Mainland China.

Key Features

• 4 Operating Modes: Delay ON, Delay OFF, Self-Locking, and Trigger Delay — covering the most common time-switch requirements in a single board.
• Adjustable Delay Time: Set any delay from 0.1 seconds up to 120 seconds to match your exact application.
• Triple Voltage Support: Choose from DC 5V, 12V, or 24V variants to suit your power supply.
• Power Supply Anti-Reverse Protection: Built-in protection guards the module against accidental reverse polarity wiring.
• Non-Volatile Memory: Parameters are saved automatically — settings are retained even after the power is cut.
• Stable Performance: Uses high-quality components for consistent, repeatable timing in real-world environments.
• Expandable: Custom functions can be added on request to meet specific application needs.

Specifications

Common Applications

• Automated lighting control systems
• Motor start/stop sequencing
• DIY home automation projects
• Industrial delay-switch circuits
• Arduino / Raspberry Pi auxiliary relay control
• Fan and ventilation timing

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Frequently Asked Questions

Q: What voltage version of the TRM01 delay relay module should I choose?

A: The TRM01 delay timer relay module is available in DC 5V, 12V, and 24V versions. Choose the version that matches your project's power supply. For microcontroller projects (Arduino, Raspberry Pi, etc.) the 5V version is typically ideal; for automotive or industrial applications, 12V or 24V are more appropriate.

Q: Can I change the delay time after the module has been set up?

A: Yes. The delay time on the TRM01 is fully adjustable at any time between 0.1 seconds and 120 seconds. Any changes you make are automatically saved to non-volatile memory, so your custom settings remain intact even after the power is disconnected.

Q: How many operating modes does the TRM01 delay relay module support?

A: The module comes pre-loaded with four operating modes: Delay ON, Delay OFF, Self-Locking, and Trigger Delay. These cover the most common time-switch scenarios. Additional custom functions can also be added based on specific application requirements.

Q: Is this delay relay module protected against incorrect wiring?

A: Yes. The TRM01 includes a built-in power-supply anti-reverse protection circuit. This safeguards the module from damage if the DC power wires are accidentally connected with reversed polarity.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.