The RT-814 (RT-814L) conductive liquid level monitor detects the presence of conductive liquid at electrode probes and switches its SPDT output relay accordingly. It supervises both minimum and maximum levels, making it suitable for controlling pumping units — starting or stopping a pump based on the liquid level in a tank or sump.

The unit connects via an 8-pin lamp base for plug-in installation in a standard relay socket. Supply voltage is 230V AC. Indicator lamps show supply voltage status and the current level state.

Key Features

• Conductive liquid level monitoring — minimum and maximum level supervision
• Suitable for use in pumping units — controls pump start/stop based on level
• Three operating modes: Level Control (LC), two-electrode plus common (L2C), three electrodes without common (L3)
• 12A SPDT output relay with 1NO 1NC contacts
• 8-pin lamp-base connection — plug-in installation in a standard relay socket
• Supply voltage and level indicator lamps

Product Benefits

• Three electrode configurations cover a wide range of tank and sump layouts
• 12A output contact rating handles direct connection to pump motor contactors
• Plug-in 8-pin base allows fast replacement without panel rewiring
• Visual indicators show supply and level status without opening the panel door
• Compact relay-socket footprint fits standard DIN-rail relay bases

Technical Specifications

• Model: RT-814
• Function: Conductive liquid level monitor
• Power Supply: 230V AC
• Output: 12A @ 250V SPDT
• Output Category: AC1 12A
• Contacts: 1NO 1NC
• Connection Type: 8-pin lamp base
• Functions: LC (Level Control), L2C (two electrodes + common), L3 (three electrodes without common)

Why You'll Love It

• Three electrode modes give flexibility to match the probe arrangement in any tank
• 8-pin plug-in base means swapping a faulty unit takes seconds, not minutes
• Supply and level indicator lamps allow status checks without a multimeter
• Package includes 1× Liquid Level Monitor RT-814 8-Pin