Programmable Water Immersion Heater Timer – Economy 7 Storage Heater Switch

A compact, programmable timer that puts your immersion or storage heater on a budget‑friendly schedule. The Optimum Economy 7 Water Immersion Heater Timer lets you set heating periods in 15‑minute blocks across a full 24‑hour cycle, so you can avoid costly peak‑rate slots and keep your water warm when you need it.

Key benefits
– Multi‑tariff control – tailor on‑off times to match Economy 7 or any other tariff.
– Adjustable boost – add a quick 15‑ to 120‑minute boost for extra warmth on demand.
– High‑capacity support – handles heaters up to 3 kW (16 A resistive).
– Tamper‑proof design – transparent plastic cover protects the tappets while still allowing easy adjustments.
– Low‑profile surface mount – fits neatly into flush‑mounted boxes (85 mm × 155 mm × 50 mm).

Built with a quartz clock for reliable timing and rated for temperatures from –10 °C to 55 °C, this timer delivers up to 72 hours of run‑reserve in case of power loss. It meets EN 60730‑1 safety standards and complies with LVD, EMC and RoHS directives.

Ideal for electric immersion heaters, combination storage units or convector systems, the Optimum timer offers a simple way to cut electricity bills without sacrificing comfort. Install it once, program your schedule, and let the timer do the rest.