WaterGuru Cassette C2 - 3 Pack

These cassettes and their patented chemistry pads are essential for correct analysis of your pool’s water, giving you the information you need to maintain a safe and clean environment to swim in. Now compatible with both SENSE S1 and SENSE S2 devices!******Before switching to C2 cassettes, SENSE S1 users must first use up any S1 cassettes. Smart cassette with patented chemistry pads and easy snap-in replacement 3 x C2 Cassettes - Measures pH and FC daily, each lasts 2 months (58 days) each. Additional daily measurements will reduce Cassette life.