Jul 24, 2026
Two control modes
Light control (photoelectric tube control/light sensor control)
working principle
Built in photoresistor detects environmental illumination: automatically turns on when the brightness drops below 5-15Lux at dusk; At dawn, it automatically shuts off when the light exceeds the threshold. It only judges whether it is lit up and does not adjust the power or working time after startup.
Time control (timed control/timer dimming control)
working principle
The controller executes a pre programmed fixed schedule after triggering:
Basic version: Fixed on/off time (e.g. lights on at 18:00, lights off at 02:00)
Advanced version: 4-level timed dimming (100% → 60% → 30% → 50%, the 12 hour curve we mentioned earlier), overnight gradient power output.
Head-to-Head Comparison Table
Comparison Item
Pure Light Control Only
Pure Time Control Only
Best Solution for Overseas Projects: Light Trigger + Time Dimming Combined Mode
Startup Logic
Auto on/off by natural light, adapt to seasonal sunset/sunrise
Fixed clock time, cannot follow seasonal day-night length change
Light sensor triggers startup at dusk; time program manages brightness curve overnight
Energy Saving & Battery Protection
Full power all night, heavy deep discharge, shortens LiFePO4 battery life
Can set segmented dimming to avoid deep discharge, maximize battery cycle life
Gradient discharge greatly reduces battery loss, extends service life by 30%+
Adaptability to Poland’s Climate
Good for long winter nights, but continuous rainy/foggy days cause misjudgment
Winter short sunshine leads to insufficient solar charging; fixed full-power running drains battery fast
Perfect fit: adapts Poland’s short daylight in winter, ensures rainy-day continuous lighting
Anti-interference Ability
Vulnerable to street billboards, building lights, snow/fog covering sensor
No light interference at all; stable in fog, frost, snow weather
Light sensor for startup, time program immune to ambient light disturbance
Road Lighting Compliance
Only full brightness, cannot match traffic peak demand
Time-based high brightness for rush hours, low power for midnight idle period
Meets EU road lighting safety standards & energy-saving policies
Maintenance Cost
Low hardware cost; need occasional sensor cleaning
Slightly higher controller cost, one-time setting no later debugging
One-time parameter setting, almost zero after-sales adjustment
Suitable Scenarios
Simple remote farm trails with ultra-low budget
Main municipal roads, busy arterial roads requiring standardized lighting
All scenarios: Polish urban community roads, rural lanes, parks, industrial zones
A) The advantages of pure light control
Fully automatic operation, end users do not need to manually set;
Adapting naturally to high latitude regions in Europe with long summer days and short winter nights;
The circuit is simple, the failure rate is low, and the controller cost is the lowest.
A) Disadvantages of pure light control
Running at full rated power all night, the lithium iron phosphate battery experiences severe deep discharge, greatly shortening its lifespan;
In Poland, frequent heavy fog, snow, and cloudy days may cause photovoltaic cells to be unable to determine light intensity, resulting in abnormal switches;
Near residential areas, house lighting fixtures and advertising light boxes are prone to accidental shutdown;
Unable to perform low-power standby during low traffic hours at midnight, failed to pass the EU energy consumption reduction assessment.
B) The advantages of pure time control
Timed segmented dimming fundamentally protects the battery and avoids excessive discharge;
Completely unaffected by weather, fog, snow, and environmental stray light interference, super stable and suitable for harsh outdoor environments in Northern Europe;
Matching traffic flow: high brightness during peak hours, energy-saving dimming mode at night, in compliance with European public lighting regulations.
B) Disadvantages of pure time control
The fixed clock time cannot be automatically adjusted with seasonal sunset/sunrise changes. For Poland: Seasonal recalibration is required manually every 3 months, around 21:00 in summer and before 16:00 in winter;
On extremely cloudy days, it will still turn on at the preset time, and the solar panels generate very little electricity, resulting in insufficient battery power and inability to provide all night lighting.
Light controlled trigger+time controlled timed dimming dual-mode (EU project industry standard)
The light control of Poland's LEADRAY 30W/40W integrated solar street light is used as a switch trigger: it automatically lights up when the ambient light is ≤ 10Lux at dusk and automatically turns off at dawn (solving the problem of seasonal daylight length variation);
Time control as the core of power management: After startup, perform a 12 hour 4-level timed dimming (100% → 60% → 30% → 50%) to achieve gradient discharge;
Overlay PIR human infrared sensing: Low power standby when there are no pedestrians/vehicles, jumping to full brightness when approaching, further reducing power consumption;
Core values of the Polish project
100% adapted to Poland's temperate climate, with short winter sunshine and rainy/frosty weather;
Effectively prevent deep discharge of lithium iron phosphate batteries and extend their service life;
Comply with the EU's carbon neutrality, energy conservation, and consumption reduction policies for public infrastructure;
Reduce the long-term operating electricity costs and maintenance frequency of the local government;
Comply with the actual traffic rules of residential areas, rural roads, and park roads in Poland.
Dual intelligent control of light and time - the best configuration for European solar street lights
Single lamp control wastes battery power and provides full power overnight lighting; Single time control cannot adapt to the seasonal diurnal variations in high latitude Poland.
Our standard dual-mode solution uses photovoltaic triggered automatic dusk start and is equipped with a 12 hour 4-level timed dimming output. It balances road safety lighting and battery deep discharge protection, greatly extending the life of lithium batteries, fully complying with EU energy efficiency regulations, and suitable for municipal road renovation projects in Poland.
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IPv6 network supported.
