The SOS-2 Condensate Drain Line Switch provides critical protection for HVAC systems by automatically shutting down operation when drain lines become clogged, preventing costly water damage to your property. This UL-rated safety device features a magnetic reed switch that detects blockages and interrupts power to your system before overflow occurs. With universal mounting capabilities—vertical, horizontal, or in-line installation—it adapts to virtually any drain configuration. Rated for 1.5A switching current and 2.5A carry current at 24VAC, it connects seamlessly to standard red or yellow wires. An essential safeguard for both primary and auxiliary drain outlets, ensuring your HVAC system operates safely and reliably.