Bluelab External Lockout & Alarm Box


An optional extra for your Pro Controller and dosing system.

SKU: PROEXBOX Category: Product ID: 2301


External lockout & alarm box – for a complete 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.


  • Built in alarm which can be disabled if required
  • An external alarm (horn or flashing light) can be connected
  • An external lockout sensor can be connected (e.g. water flow sensor) which will stop all control and dosing
  • Compatible with Bluelab® Pro Controller

Additional information

Weight 0.193 kg
Dimensions 110 × 35 × 60 mm