Optimum

Optimum (formerly Grasslin) is a trusted name in grow room timing and control, known for producing accurate, reliable, and easy-to-use 24-hour timers that keep lighting and environmental equipment running perfectly on schedule. Building on Grasslin’s long-standing reputation for engineering quality, Optimum continues that tradition with modern, grower-focused designs built for durability and safety.

The flagship Optimum 24-Hour Timer provides precise daily scheduling for lights, fans, and other key systems, ensuring consistent operation without the risk of overload or timing drift. Compact, robust, and straightforward to use, it’s designed to withstand continuous grow room demands while maintaining dependable accuracy crop after crop.

For growers who value precision, simplicity, and reliability, we recommend Optimum from Greens Horticulture — delivering proven performance, dependable design, and fast UK delivery every time.