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Timer Otio 3500 Watt
The Otio mechanical mini timer automates the on/off switching of your grow lights, fans or irrigation systems on a fixed daily schedule. Set in 30-minute increments, maximum load 3500W. Compact, no screen, no battery needed for programming. The straightforward choice for growers who want reliable daily scheduling without digital complexity.
Otio Mechanical Mini Timer 3500W — simple daily scheduling for grow rooms
Not every grow room needs a programmable digital controller. The Otio mechanical mini timer handles straightforward daily scheduling with a rotating dial and physical pegs — no menus, no display, no programming knowledge required. Suitable for all electrical equipment up to 3500W, including ballasts, LED panels, fans and irrigation pumps. For multiple daily cycles or minute-level precision, compare with the Otio digital timer.
How the mechanical timer works
The timer uses a 24-hour rotating disc with small pegs around the edge. Each peg represents a 30-minute block. Push the pegs outward for the periods you want the device to be on, plug in your equipment and the timer handles the rest — repeating the same schedule automatically every day without any further input.
- Minimum interval: 30 minutes per block
- Max. load: 3500W at 230V (15A)
- Automatic daily repeat — no reprogramming needed
- Compact plug-in format — fits directly into any wall socket
- Applications: grow lights, fans, pumps, heaters
Mechanical vs digital timer: which should you choose?
A mechanical timer is the right tool when you need one fixed daily cycle — 18 hours of light during vegetative growth or 12 hours to trigger flowering. There is no battery required to hold the schedule and the device operates reliably with zero electronics. For growers who need multiple on/off events per day or exact timing, the Lumatek digital timer offers more flexibility.
Order your Otio mechanical timer from our Belgian growshop. Fast delivery across Belgium.
Can I use the Otio mechanical timer with a 600W ballast?
Yes. The 3500W maximum load is well above the requirements of a 600W ballast. If you connect multiple devices to the same timer, make sure the combined wattage stays within the 3500W limit.
How do I set a 12/12 flowering schedule on a mechanical timer?
Push 12 consecutive 30-minute pegs to the active position to set your 12-hour light period. Leave the remaining 12 pegs inactive for the dark period. The timer repeats this cycle automatically every 24 hours. For an 18/6 vegetative schedule, set 18 pegs active.
What happens to the mechanical timer program during a power cut?
The program is set physically by the pegs, so there is nothing to lose electronically. When power returns the disc resumes rotating from wherever it stopped. The scheduled on/off pattern remains intact, though the current time position on the dial may need a manual reset if the outage was long.