|7.8 × 5.9 × 2.75 in
This Bluelab External Lockout and Alarm Box is an optional extra for your dosing system. Use 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.
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