Bluelab External Lockout & Alarm Box

The Bluelab External Lockout & Alarm Box is an essential safety add-on for the Bluelab Pro Controller, enabling external switch integration to prevent overdosing and trigger audible or visual alarms in your hydroponic growing system.

Key Features

• External Switch Lockout: Connect float switches, level sensors, or irrigation controllers to automatically inhibit all dosing when triggered — putting plant safety first.
• Normally Open & Normally Closed Switch Support: Compatible with both NO and NC switch configurations for maximum flexibility.
• Irrigation Controller Integration: Pause dosing during feed-out cycles by wiring in your irrigation controller — prevents nutrient overdosing during irrigation events.
• External Alarm Output: Add an audible horn or flashing light to your Pro Controller system for immediate alerts when lockout is triggered.
• DIY Wiring: Wire in your own switch options for a fully customized safety and control setup.
• Overdose Prevention: Automatically stops all dosing when a connected sensor (e.g. float switch on reservoir or nutrient tank) detects a fault condition.

How It Works

When connected to the Bluelab Pro Controller, the External Lockout & Alarm Box monitors the state of connected external switches. If a switch is triggered — for example, a float switch detecting low nutrient levels or a reservoir fault — the Pro Controller immediately enters lockout mode and halts all dosing until the condition is resolved and the system is reset. An external alarm output allows you to add a horn or flashing light for audible/visual notification.

Compatible With

• Bluelab Pro Controller

Ideal For

• Hydroponics and aquaponics systems using the Bluelab Pro Controller
• Growers integrating float switches or level sensors for reservoir safety
• Commercial and hobby grows requiring automated overdose protection
• Systems with irrigation controllers requiring dosing pause during feed-out

In the Box

• Bluelab External Lockout & Alarm Box
• User Manual