In one Phalaenopsis trial, all four varieties reached a 100% spiking rate at 25°C by day and 20°C by night, but 0% after six weeks at 30°C by day. A greenhouse has to do more than stay cool: it has to hit the right temperature at the right time of day.
Tomatoes are similar: a 20°C night is considered the critical cultivation temperature for temperate varieties. The clips are illustrative; equipment order and thresholds depend on the crop and growth stage. RIO is LLD Technology's remote I/O module. It reads sensor values and sends control signals.
Timers and basic sensors cannot adapt to actual conditions.
Each cooling device runs on its own temperature threshold. A configurable minimum run time prevents frequent starts and stops, extending equipment life.
Cooling pads can only be switched by hand on site, so they cannot respond promptly to changing conditions.
The higher the humidity, the less evaporative cooling can do. RIO evaluates temperature and humidity together. When humidity is too high, it shuts off the water to the cooling pads and relies on ventilation.
All control logic runs on RIO, so it is unaffected by network conditions. At the scheduled time, RIO retracts the shade screens and switches to the night thresholds, while continuing to start and stop the fans as the temperature changes.
Sensors send temperature and humidity readings to RIO. RIO evaluates them against the thresholds and schedules you set, then sends control signals to the fans, cooling pads and shade screens. Equipment order and thresholds are set for each crop and can be adjusted by growth stage.
With DDC, decides on site based on temperature, humidity and time of day
RIO has no built-in display or long-term logging. To view the data, read it from RIO with an environmental computer, PLC or monitoring software that supports Modbus.
RIO loses power during an outage and cannot control anything. Once power returns, RIO resumes control immediately.
Yes. Control runs on RIO on site and does not require a network connection.
That is up to the grower and depends on the crop and growth stage. The numbers in the clips are illustrative, not recommendations.
Yes. Thresholds, schedules and equipment actions can be configured to match the ideal growing conditions for each crop in your greenhouse.
Yes. RIO only makes decisions and sends control signals. Your on-site control panel still handles the actual switching.
Crops, equipment types and quantities, thresholds and schedules can all be tailored to your site. Tell us about your greenhouse, and our sales team will help you plan the setup.
