Fan Speed Controller Day/Night With Photpcell Fans & Filters Guaranteed Minimum Analysis is Nitrogen

Guaranteed Minimum Analysis is Nitrogen (N) 5

and a control range of 68-108°F (20-42°C)

Pre-filter: Yes

It utilizes natural sources (land and sea minerals) to deliver essential nutrients for lush

These flat white horizontal reflectors are light weight and durable

Fan Speed Controller Day/Night With Photpcell Fans & Filters Guaranteed Minimum Analysis is NitrogenThis Dual Stage Fan Speed Controller will adjusts the exhaust of the fan speed automatically. It has two separate speeds which can be controlled by any power switching device; timer or thermostat. Usage Day Night fan speed control Maintaining negative pressure while thermostats are off. Backup cooling and negative pressure system. Applications that require your vent fan to operate at different speeds while maintaining negative pressure.