This WSP50ARJ plus EDV2 bundle pairs robust sediment protection with salt-free electronic descaling to protect plumbing and appliances while reducing scale issues. WSP50ARJ - Spin-Down Sediment Filter 50-micron stainless steel mesh removes sand, dirt, silt and rust. Whole house first-line prefilter, protecting downstream equipment. Jumbo 1-gal. capacity and up to 25 GPM flow with universal fittings (1 in. MNPT / 3/4 in. FNPT). Integrated touch-screen auto-flush module (Auto / Semi-Auto / Manual) reduces manual cleaning. Flushable and reusable filter screen, 316L food-grade stainless mesh, and explosion-proof clear housing, NSF/ANSI-372 lead-free certification. EDV2 - Electronic Descaler (Salt-Free) Electronic descaling technology reduces limescale and prevents deposit build-up without using salt or changing water chemistry. Durable aluminum alloy construction, higher output design. Easy installation (no plumbing modification), maintenance-free operation, and 1-year limited warranty upon registration. Bundle Benefits Protects whole-home plumbing, water heaters, dishwashers, washing machines and water treatment devices from sediment and scale damage. Lowers maintenance frequency: auto-flush sediment control plus salt-free descaling for ongoing scale prevention. Cost-effective way to extend appliance life without salt, chemicals, or frequent cartridge swaps.