The RT-814L monitors conductive liquid levels in tanks and pumping units, triggering on minimum or maximum level thresholds. Sensitivity is set via an external potentiometer, allowing the unit to adapt to different liquid conductivity values between 1 KΩ and 100 KΩ.

It mounts on an 8-pin lamp base and includes supply voltage and level indicator lamps for at-a-glance status. The single SPDT output relay supports four wiring configurations including two-electrode and three-electrode probe setups.

Key Features

• Adjustable sensitivity from 1 KΩ to 100 KΩ via external potentiometer
• SPDT output relay: 12A @ 250V
• Supply voltage and level indicator lamps
• 8-pin lamp base for panel mounting
• Supports LC, S, L2C, and L3 wiring functions

Product Benefits

• Sensitivity adjustment accommodates a wide range of conductive liquids without additional components
• Minimum and maximum level monitoring in a single unit protects pumps from running dry or tanks from overflowing
• 1NO 1NC contacts allow both normally-open and normally-closed circuit control from one relay
• Indicator lamps confirm power and level status at a glance, reducing diagnostic time
• Three-probe (L3) mode enables independent control of fill and drain circuits

Technical Specifications

• Model: RT-814L
• Type: Conductive liquid level monitor with adjustable sensitivity
• Sensitivity Range: 1 KΩ to 100 KΩ
• Output: 12A @ 250V SPDT
• Output Category: AC1 10A
• Contacts: 1NO 1NC
• Power Supply: 230V AC
• Base: 8-pin lamp base
• Wiring Functions: LC (Level Control), S (Sensitivity adjustment), L2C (Two probes + Common), L3 (Three probes)

Why You'll Love It

• External potentiometer allows on-site sensitivity tuning without replacing components
• 8-pin base makes installation and replacement quick — no wiring changes needed
• Four supported wiring functions cover the most common pump and tank control layouts
• Package includes: 1× RT-814L Level Monitor with adjustment