Author: Mike

OP IHTGPT 24 hour Immersion Timer

OP‑IHTGPT 24‑Hour Immersion Timer — a pragmatic, no‑frills daily scheduler

By Mike
July 29, 2026 0

A basic, surface‑mounted mechanical timer aimed at straightforward daily control of immersion heaters and similar resistive loads. It’s simple to install and programme, offers 15‑minute scheduling steps and a removable link for volt‑free or mains switching. Best where low cost, simplicity and proven mechanics matter; avoid it if you need sub‑15‑minute control, outdoor protection or to switch modern lighting without a contactor.

OP IHTDIGI Digital Immersion Timeswitch

OP-IHTDIGI Digital Immersion Timeswitch — a clear, low‑cost timer for simple water‑heating control

By Mike
July 29, 2026 0

A compact, no‑frills digital timeswitch for immersion heaters and other resistive loads. The OP‑IHTDIGI offers 24‑hour and seven‑day programming with one‑minute resolution, volt‑free SPDT contacts and a handful of useful manual modes. It’s a practical choice where predictable, local timer control is required, but not for smart integration or high inductive loads.

VAL222MV Zone Valve 22mm

VAL222MV 22mm Zone Valve — a pragmatic choice for straightforward domestic zones

By Mike
July 27, 2026 0

A compact 22mm two‑port motorised valve with a low‑power synchronous actuator, spring‑return fail‑safe and an auxiliary end‑switch. Suitable for most fully‑pumped domestic heating zones where simple on/off control and boiler interlock are needed — but not the right fit for systems demanding modulating control, high flow differentials or heavy electrical switching.