12V Dual Display Relay Timer — Precision control for all your automation needs
Need to trigger a pump after a 10-second delay, shut down a motor at a set interval, or create a continuous, unattended loop? This 12V programmable relay timer with a dual LED display delivers exactly that: precise control, clear visual feedback, and settings that remain saved even during power outages.
Note: All configured settings are automatically saved to non-volatile memory, ensuring seamless operation immediately upon power restoration.
Why choose this model? (Key Advantages):
- Dual-colour LED display — Green for T1, red for T2, visible simultaneously; no more guessing which interval is currently running.
- 20A Relay — Effortlessly switches motors, pumps, solenoid valves, and fans; double the capacity of standard 10A modules.
- 3 Operating modes — Delay for a single timed action, Timing for controlled duration, and Loop for infinite cycles without manual intervention.
- 0–999 range in seconds, minutes, or hours — From a one-second pulse to a 999-hour process, all from one versatile module.
- Non-volatile memory — The device resumes exactly where it left off after a power cut; no need to reprogram.
- Settings lock (P3) — Prevents accidental changes in permanent installations or multi-user environments.
- Compact design, standard mounting — 47.6 × 28.6 × 33.2 mm, designed to fit directly into control panels or industrial housings without modifications.
Details and Performance
At the heart of this module is a precision microcontroller that independently manages the two time intervals and maintains dual-display synchronization without visible lag. The P2 (switching priority) function allows you to choose whether the cycle starts with the relay active or inactive — a crucial detail when working with loads that cannot tolerate unwanted pulses during initial power-up. The three physical buttons (S, △, ▽) provide tactile feedback and allow for quick menu navigation, even when wearing work gloves.
| Parameter | Value / Detail |
|---|---|
| Supply voltage | 12V DC |
| Maximum relay current | 20A |
| Timing range | 0 – 999 seconds / minutes / hours |
| Operating modes | Delay, Timing, Loop (repetitive cycle) |
| Display | Dual digital LED (Green T1 + Red T2) |
| Settings memory | Non-volatile — retains data after power-off |
| Control buttons | 3 (S, △, ▽) |
| Module dimensions | 47.6 × 28.6 × 33.2 mm |
| Mounting cutout | 45 × 26.1 mm |
Programming and Usage Instructions
- Hold the “S” button for 6 seconds to enter the configuration menu.
- Use the “△” or “▽” keys to adjust values; press “S” again to move to the next parameter.
- P0 – Time unit for Time 1 (green display): P0-0 = seconds | P0-1 = minutes | P0-2 = hours.
- P1 – Time unit for Time 2 (red display): P1-0 = seconds | P1-1 = minutes | P1-2 = hours.
- P2 – Switching priority: P2-on = start priority | P2-off = stop priority.
- P3 – Settings lock: P3-0 = unlocked | P3-1 = locked (protects against accidental changes).
- Press the “S” button twice to enter the actual duration setting interface: green display = Time 1, red display = Time 2.
- Delayed start example: 6 seconds – set P1-0, green: 000, red: 006.
- Delayed stop example: 5 seconds – set P0-0, green: 005, red: 000.
- Infinite cycle example: 3s ON / 2s OFF – set P0-0, P1-0, P2-ON, green: 003, red: 002.
Package Contents
- 1 x 12V Programmable relay timer module with dual LED display
Frequently Asked Questions
What happens to my settings if the power cuts out?
The module features non-volatile memory, which automatically saves all configured parameters. When power is restored, the device resumes operation with the exact same settings, with no need for reprogramming.
Can I use this module to control a DC motor?
Yes, the integrated relay supports loads up to 20A, making it suitable for DC motors, small pumps, fans, or solenoid valves, provided the power draw does not exceed this limit.
What is the difference between Delay mode and Loop mode?
Delay mode triggers the relay once after the set interval. Loop mode creates an infinite repetitive cycle, alternating between the active (T1) and inactive (T2) states, which is ideal for intermittent lighting or periodic control applications.
Can the module be powered by 24V or only 12V?
This model is designed exclusively for 12V DC power. Applying a higher voltage may cause irreversible damage to the circuit. For 24V applications, a dedicated model or a DC-DC step-down converter is required.
How accurate is the timing?
The module offers high precision at the second level thanks to the integrated microcontroller. For long intervals (hours), any error is negligible for standard automation applications.
Photo Gallery
***b*r* **rc** –
Tons of features. I used it to set up a custom lighting loop and it works flawlessly.