The Reef Angel Water Expansion Module will let you monitor your sump or display tank water level and give you a precise indication that you can use to turn on/off your equipment.

Example of things you could do:

• Implement an ATO. No more mechanical float switches that can be easily tampered by a simple snail
• Shut off return pumps to avoid overflow
• Shut off ATO pumps to avoid them running dry
• Implement an Automatic Water Change
• Alert you of any abnormality that can be found by monitoring the level of water

Features:

• Pressure sensitive sensor (No mechanical sensors or moving parts)
• Up to 18″ of range
• Uses any standard 1/2″ PVC pipe to measure the water level
• Pipe not included

Note: Only one expansion module can be connected to your system without an Expansion Hub.