No need to reset your Timer from 18hrs to 12hrs, just push one button to switch over. Time-Tastic Timer – The ultimate in simplicity for grow room control! Time-Tastic Grow and Bloom single button timer allows you to easily switch between vegetative (grow / 18hrs) and floral (bloom / 12hrs) with one easy button! Reliability, simplicity and powerful – The Time-Tastic Push and Grow Timer is capable of managing up to 2400w with a monster 30AMP breaker! Use the Time-Tastic with hydroponic lighting, heaters, fans, dehumidifiers, pumps or other crucial components of your room, and set it with ease! Time-Tastic takes the guesswork out of complicated timers and allows you to easily see which cycle type your room is operating and adjust with a singe press of a button! Amazing! Built for compliance and achieving Australian standards of safety certification – the Time-Tastic provides true peace of mind! The ultimate in simplicity for grow room control! Time-Tastic Grow and Bloom single button timer allows you to easily switch between vegetative (grow / 18hrs ) and oral (bloom / 12hrs) with one easy button! Reliability, simplicity and powerful – The Time-Tastic Push and Grow Timer is capable of managing up to 2400W with a monster 30AMP breaker! • 30Amp Breaker• Single button operation and setting• Dual mode cycle – Grow (18hrs) & Bloom (12hrs).• Weather resistant• Easily mountable. Use with:•Hydroponic lighting.• Heaters.• Fans.• Dehumidifiers.• Pumps.• And many more electrical devices.