TrolMaster Programmable Dry Contact to Control Normally on/off Items -Temp RH Co2 or Recycle bud coco 3 sensors in a single

3 sensors in a single probe

SUPERthrive® K-L-N Rooting Concentrate™

We recommend using Olympus Up with Herculean Harvest to form an amazing calcium food source for soil microbes

These special L-Form amino acids are powerhouses of plant growth

01 calibration buffer produced in accordance with ISO 3696/BS3978 standards using high purity salts

TrolMaster Programmable Dry Contact to Control Normally on/off Items -Temp RH Co2 or Recycle bud coco 3 sensors in a singleThe Trolmaster DSD 1 Dry contact module provides a simple and flexible solution to who want to connect & control devices to the Hydro X using a dry contact or relay to activate the device. Some equipment requires either normally open or normally closed contact closure in order to activate the equipment. The DSD 1 is the product that you need to control those types of devices. *