Apex LLS Liquid Level Sensor – Neptune Systems

Product details

The Apex LLS Liquid Level Sensor – Neptune Systems is a liquid level sensor designed to measure the depth of water in an aquarium system’s reservoir areas. In this shop context, the unit is the 4" LLS (often noted as LLS-4), making it well suited to smaller containers such as compact ATO (auto top-off) reservoirs, small sumps/refugium reservoirs, and additive containers where you want a simple, depth-based way to confirm liquid changes over time. Using the sensor to track level movement can help you verify that the amount you add matches your dosing plan, and it can also provide an additional checkpoint when troubleshooting small variations in system water volume.

Features:

• 4" LLS size is intended for small reservoirs and compact containers
• Works by measuring liquid depth using the sensor’s wetted/ruler section
• Helpful for double-checking that measured additions match your dosing schedule
• Useful for monitoring ATO reservoir level to understand when top-off will be needed
• Can be used in small sump/refill areas where you want consistent water depth awareness
• Can support day-to-day checks by comparing level changes over set time periods

Specifications:

• Model/size: LLS-4 (4" liquid level sensor)
• Intended application: Small reservoirs for small sumps, ATO reservoirs, and additive containers
• Measurement method: Depth/liquid level measurement (sensor portion intended to be in the water)