Powerful for Families: 4000W output to power high‑demand appliances from washing machines to EV chargers. X‑Boost surges to 6000W when needed. Expandable Up to 12 kWh : Scales from 4 to 12kWh as your energy needs grow. Whisper‑Quiet Comfort: 30 dB at 2000W—quieter than a running refrigerator. Store Solar, Slash Bills: With up to 2600W solar input, store excess by day and power your EV overnight —save up to £ 1,314/year.* Blackout Guardian: 10 ms switchover keeps fridge, lights, and essentials running. 6‑Way Rapid Charging: 0–80% in one hour, or solar charge to 80% in 1.5 hours. Easy Setup & Portability: Plug‑and‑play design for homes, RVs, and off‑grid cabins. * See below for calculation details. Note: The Solar Panel Mounting Feets are not included. Important: The Manual Transfer Switch requires professional installation by a certified electrician. All associated installation costs are to be covered by the purchaser, who is responsible for securing a qualified electrician in their area. Click to read the Instruction Leaflet of the Manual Transfer Switch. DELTA Pro 3 accessories >> DELTA Pro 3 User Manual >>