Here it is B&B
It cost about £120 - i saw it cheaper elsewhere but didn't like the look of them. ..
RUCK Temperature Controlled Fans
Designed to fill a long-term gap in the growing market, the RUCK Temperature Controlled Fans sense airflow temperature and automatically adjust their speed to maintain a constant level of heat.
Based on the German designed and made original RUCK, these fans now feature a thermostat sensor inside the fan to measure the temperature of the airflow and then adjust the fan between four speed settings to maintain a nearly constant temperature without any additional hum.
Because of the internal sensor you can set up extraction with the fan outside of the grow room instead of using a probe to monitor the ambient temperature of the air inside the grow room (as with the Primair). This method will require a bit of fine tuning as there can be some temperature variation with longer lengths of ducting.
The temperature controlled fans are adjustable from 20° to 28° and also feature a slight delay to allow for brief temperature changes such as the opening of a door.
Each fan comes with a 1.5m cable pre-fitted, although a plug will need to be attached.
Expensive, but totally worth it in our opinion.
I'm not advertising - haven't even tested it yet and if it's naff i'll be the first person to say ^_^ .. But i've got hopes that it will be just the ticket!
It cost about £120 - i saw it cheaper elsewhere but didn't like the look of them. ..
Designed to fill a long-term gap in the growing market, the RUCK Temperature Controlled Fans sense airflow temperature and automatically adjust their speed to maintain a constant level of heat.
Based on the German designed and made original RUCK, these fans now feature a thermostat sensor inside the fan to measure the temperature of the airflow and then adjust the fan between four speed settings to maintain a nearly constant temperature without any additional hum.
Because of the internal sensor you can set up extraction with the fan outside of the grow room instead of using a probe to monitor the ambient temperature of the air inside the grow room (as with the Primair). This method will require a bit of fine tuning as there can be some temperature variation with longer lengths of ducting.
The temperature controlled fans are adjustable from 20° to 28° and also feature a slight delay to allow for brief temperature changes such as the opening of a door.
Each fan comes with a 1.5m cable pre-fitted, although a plug will need to be attached.
Expensive, but totally worth it in our opinion.
I'm not advertising - haven't even tested it yet and if it's naff i'll be the first person to say ^_^ .. But i've got hopes that it will be just the ticket!