SOS-1 Universal Fit for 3/4" PVC Drain Lines | Includes Tee Elbow Protect your property and A/C system from costly damage. The SOS-1 Condensate Overflow Safety Switch is your first line of defense against water damage. This device automatically detects clogs in your air conditioner's condensate drain line and shuts off the system to prevent overflows, mold, and expensive repairs. Key Features: Automatic Detection Shut-Off: Detects when the A/C drain line clogs and automatically shuts down the system to prevent water damage. Universal Installation: Can be mounted vertically, horizontally, or in-line. Use it on both primary and auxiliary drain outlets. Superior Reliability: Features a magnetic reed switch for long-lasting, dependable performance. Easy Connection: Connects directly to the low-voltage control wires (red or yellow) of your system. Technical Specifications: UL Rated Switch: Switching Current: 1.5A @ 24VAC Carry Current: 2.5A @ 24VAC Kit Includes: Sealed switch with 6 ft of 18AWG lead wire. Standard Tee and Elbow connections. 3/4" Adapter and Plug. The SOS-1 is the ideal choice for HVAC technicians and homeowners looking for a simple, effective safety solution to protect their equipment and their home.