The SensaSwitch PSP-OBS-2Y combines a market-leading success rate with premium after-sales support, including an extended 2-year support for guaranteed long-term performance. To ensure a seamless start, we offer free return pickups during the first three months from date of invoice . Engineered with advanced anti-scaling circuitry and climate-resilient sensors, this safe overflow alarm protects your home from costly structural damage to roofs and walls. It is a high-value investment that delivers significant savings on water bills while providing total peace of mind.