DROK 12V Timer Relay 2-pack LED Display, 0.1s–999min Adjustable Delay with Optocoupler Isolation

The DROK 12V Timer Relay (2-pack) is a compact LED-display delay relay with four selectable timing modes and a wide adjustable range from 0.1 seconds to 999 minutes.

This dual-relay module is designed for automotive, industrial, and DIY electronics projects where precise on/off timing and resilience to electrical noise matter. Each board runs on 12V, features a clear LED numeric display, simple button controls, and an auto-save of parameters so your configuration survives power cycles. With optocoupler isolation on the output, the relay resists interference from noisy power lines, making it suitable for environments with sensors, switches, or PLC triggers.

How do the four timing modes work and when would I pick each?

The relay provides four distinct operating modes, letting you choose how the timer behaves when triggered: delay-on, delay-off, cyclic, and pulse timing styles are commonly offered in similar modules. You select the mode with the onboard buttons and verify it on the LED display; then set the timing value to match your application. Each mode supports common trigger types like a button press, a PNP sensor signal, or a PLC output, giving flexibility across projects.

• Mode options for on-delay, off-delay, cyclical, and pulse-style timing
• Selectable trigger sources: positive power, switch, PNP sensor, or PLC
• Easy mode change and confirmation via LED digital readout

What timing range can I achieve and how precise is it?

This DROK timer covers an extremely broad range from 0.1 seconds up to 999 minutes, so it adapts to both short pulses and long delays without changing hardware. The display shows the set value and allows fine adjustment using the unit’s buttons, making it straightforward to dial in sub-second precision or long-duration waits. Once programmed, the module retains saved settings after power loss, preventing accidental resets.

• Adjustable from 0.1 s to 999 min for micro to multi-hour delays
• LED numeric display for clear confirmation of the set time
• Automatic parameter saving so settings persist after power off

How reliable is the relay in electrically noisy automotive or industrial environments?

The relay’s output uses optocoupler isolation to separate the control electronics from the switching output, which reduces susceptibility to interference and voltage spikes. That design improves stability when working alongside motors, solenoids, or long cable runs that generate electrical noise. The compact PCB and robust relay contacts are chosen for common 12V loads typical in vehicles and control panels.

• Optocoupler isolation for enhanced anti-interference performance
• Designed for standard 12V systems found in cars and small machinery
• PCB layout and relay selection optimized for common switching loads

How easy is it to install and operate the DROK timer relay?

Installation is straightforward: wire the 12V supply, connect your trigger source, and run the load through the relay contacts. Operation uses three tactile buttons with the LED numeric display showing mode and timing values; no external programming tools are required. Because parameters are saved automatically, you can power down and return without reconfiguring the unit.

• Simple 12V wiring and clear trigger/load terminals for quick setup
• Button-driven interface with on-board LED display—no PC needed
• Settings persist across power cycles for convenience

Who is this for? The DROK 12V Timer Relay (2pcs) is aimed at hobbyists, auto technicians, and control-system integrators who need a compact, durable time-delay solution. Choose it when you want flexible timing modes, broad adjustable ranges, and stronger interference resistance for installations in cars, workshops, kiosks, or small automation systems. The two-pack provides spare capacity or parallel use across multiple circuits without needing additional purchases.