Bluelab External Lockout and Alarm Box Grower's Edge Heavy 16 Roots is a

Heavy 16 Roots is a multi-function rhizosphere additive that supports cleaner

Expand your GrowControlTM System with a GC-XO Slave Controller

featuring a sleek black galvanized steel construction

Flexible Mounting: Mount a main controller on the door or on the DIN rails inside

Heaters: 500 watts x 3

Bluelab External Lockout and Alarm Box Grower's Edge Heavy 16 Roots is aUse the Bluelab External Lockout & Alarm Box to connect the Bluelab Pro Controller to external switches, for example a float switch or a greenhouse alarm system. When these switches are activated, the Bluelab Pro Controller is placed in lock out mode, so no further dosing will occur until reset. Comes with built in alarm which can be disabled if required. It can be connected to an external alarm (horn or flashing light).