Optimum
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£19.95A family of simple, reliable mechanical 24‑hour timer modules from TFC Group’s Optimum FM/1 range, supplied in several tab‑orientation variants so they’ll plug straight into many Baxi, Potterton, Alpha and Ideal boilers. They use a 24‑hour dial with 96 tappets, provide volt‑free changeover switching and a manual ON/Auto/OFF override — a low‑cost, proven spare for restoring original timed control.
FM Timer Module Variants
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£52.95A compact Wi‑Fi time switch intended to add smartphone and voice control to an existing boiler or immersion heater. It offers up to 15 on/off programmes (1‑minute minimum), a manual override button, volt‑free SPDT switching and connection via the Smart Life app (2.4 GHz Wi‑Fi). Suited to simple retrofit use where timed switching — not temperature modulation — is required.
OP-BM-IHTWF01 Wi-Fi Boiler Module
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£35.99A compact 7‑day digital fused‑spur timer for single‑gang pattress installation, offering 24 on/off events, a double‑pole isolator and a removable BS1362 13 A fuse caddy. It’s designed for permanently wired resistive loads (13 A) and includes an internal rechargeable cell (≈200 hours) to retain settings during power loss.
OP-DFST Socket Box Fused Spur Timer
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A compact single‑module DIN‑rail digital timer for simple 7‑day or 24‑hour scheduling. The OP‑DIN offers six ON / six OFF events, an LCD for programming, rechargeable backup (≈100 hours) to retain clock and programmes during power loss, and a 16 A resistive switching contact — a neat, space‑saving choice for panel‑mounted lighting or heating control where sophisticated networking or heavy inductive switching is not required.
OP-DIN 1 Module 1CH Time Switch
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£41.95A compact DIN‑rail Wi‑Fi timeswitch for a single mains output, the Optimum OP‑DRWF01 gives 24‑hour and 7‑day scheduling via an iOS/Android app, internet time synchronisation and Alexa/Google Home voice control. It’s aimed at domestic and light‑commercial use where a discreet, in‑board timer is needed for heating circuits, pumps, fans or lighting, provided the loads are within the 16 A resistive / 4 A inductive ratings.
OP-DRWF01 Wi-Fi DIN Rail Timer
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A compact, one‑button socket‑box boost timer by Optimum (TFC Group) that delivers four pre‑set timed mains boosts — 15, 30, 60 or 120 minutes — for resistive heating appliances. It’s rated for 16 A resistive switching, fits a standard pattress box and uses LED indication and quartz timing for clear, accurate on‑demand control.
OP-EBT2 Socket Box Electronic Boost Timer
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£66.95A straightforward mechanical 24‑hour immersion heater timer for Economy‑style tariffs. The Optimum OP‑ECOSAVE switches single, dual or twin immersion elements during off‑peak periods, offers a selectable 15–120 minute boost, and includes clear indicator lamps, a manual on/off override and a 72‑hour running reserve.
It’s a simple, electrician‑fitted solution when you want reliable timed hot‑water control without smart features.
OP-ECOSAVE Immersion Heater & Economy 7 Timer
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£15.79A compact 24‑hour synchronous plug‑in timer module for repeatable daily scheduling. The OP‑FM1STU00 uses 15‑minute captive tappets to control a single volt‑free SPDT output and is designed as a direct replacement for many wall‑hung boiler programmers and sub‑panel time‑switch applications. This variant has no manual override.
OP-FM1STU00 Timer Module 24 Hour
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£14.95A compact 24‑hour synchronous plug‑in timer module designed as a drop‑in replacement for many wall‑hung boilers and control panels. It uses captive 15‑minute tappets and a three‑position manual override (timed / fixed‑on / fixed‑off), and provides a volt‑free SPDT contact rated 16 A resistive / 8 A inductive for simple daily scheduling.
OP-FM1STUH0 Module With Override
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A compact, battery‑powered programmable thermostat with capacitive touch controls and a clear backlit screen. The Optimum Vibe OP‑HWSTAT offers six user‑adjustable periods per day, volt‑free switching for broad boiler compatibility and adjustable frost protection — a straightforward option where local scheduled control is required but Wi‑Fi or smart features are not.
OP-HWSTAT Digital Room Thermostat
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£37.99A compact digital timeswitch for immersion heaters and general purpose switching, offering 24‑hour and 7‑day programming with 1‑minute resolution and up to 24 ON/OFF events. It uses volt‑free SPDT contacts (removable link for direct immersion wiring), runs from 220–240V AC and is rated 16A resistive / 4A inductive — a straightforward local controller where predictable, timer‑based operation is required without smart features.
OP-IHTDIGI Digital Immersion Timeswitch
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£22.50A simple, surface‑mounted 24‑hour mechanical timer for immersion heaters and general‑purpose switching. It offers 15‑minute tappet intervals, SPDT volt‑free contacts with a removable link for mains switching, a three‑position manual override and ratings of 16 A resistive / 8 A inductive.
Suited to basic daily scheduling of hot‑water heaters and similar loads in dry indoor locations; not for direct switching of LED or discharge lighting without a contactor.
OP-IHTGPT 24 hour Immersion Timer
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A surface‑mounted mechanical 7‑day timer for immersion heaters and general‑purpose loads. The OP‑IHTGPW uses captive tappets on a weekly dial (2‑hour intervals), has a three‑position override and volt‑free SPDT contacts (link removable). It’s rated 16 A resistive / 8 A inductive and is intended for simple, reliable weekly scheduling rather than fine or smart control.
OP-IHTGPW 7 Day Immersion Timer
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£44.99A compact, pattress‑mounted digital timeswitch for routine mains control. The OP‑S BSDIGI offers 24‑hour and full 7‑day programming with 24 on/off events, 1‑minute resolution, Random and Countdown modes, and a volt‑free changeover contact so it can directly handle resistive loads or drive a contactor for larger or inductive loads.
It’s a straightforward choice where accurate scheduled switching is required indoors—heating, simple pumps and similar domestic applications—provided you respect the load type and the manufacturer’s guidance on switching LED or discharge lighting.
OP-SBSDIGI Digital Socket Box Timer
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£16.99A compact 24‑hour mechanical timer that mounts over a single pattress box and uses 15‑minute captive tappets to create daily on/off schedules. It provides volt‑free SPDT switching (16 A resistive, 8 A inductive) and a Timed/OFF/Constant override — useful for simple domestic or light‑commercial timing tasks where straightforward, repeatable daily control is required.
OP-SBST 24 Hour Socket Box Timer
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A mechanical 24‑hour captive‑tappet timer intended for mounting on a single pattress box and driven by a 24V DC motor. It offers 15‑minute programming intervals, a volt‑free SPDT changeover contact (16A resistive / 8A inductive) and a Timed/OFF/Constant manual override — typically used to schedule 24V heating and control circuits where a simple, repeatable daily schedule is required.
OP-SBST24V 24V Socket Box Timer
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£26.39A mechanical 7‑day pattress‑box timeswitch with captive two‑hour tappets and a simple Timed / ON / OFF override. It supplies volt‑free SPDT switching and is rated for 16 A resistive (8 A inductive), which makes it a straightforward choice for basic weekly schedules on domestic or light‑commercial circuits where two‑hour steps are acceptable.
OP-SBSW 7 Day Socket Box Timer
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£39.95A single‑gang, Wi‑Fi enabled socket‑box timeswitch that fits a standard pattress. The OP‑SBWF01 provides Smart Life app and voice control, 24‑hour or 7‑day scheduling with up to 15 on/off programmes and a volt‑free SPDT contact rated 16 A resistive (4 A inductive). It’s suited to internal domestic or light‑commercial control where neat wall mounting and app‑based scheduling are required.
OP-SBWF01 Wi-Fi Socket Box Timer
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£57.49A compact wall‑mounted two‑channel Wi‑Fi timeswitch (Optimum OP‑SBWF02) that fits a standard single pattress box and provides two independently scheduled 230V outputs. It’s aimed at domestic and light commercial uses where remote app control, local override buttons and voice assistant integration are useful — but note the modest 5A per‑channel rating and indoor‑only installation requirement.
OP-SBWF02 Wi-Fi Socket Box Timer
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£57.49A compact, pattress‑mounted 3‑channel Wi‑Fi timeswitch (model OP‑SBWF03) that gives independent scheduling and manual override for three 230V outputs. It’s designed for domestic and light commercial use — ideal for hot water and multi‑zone heating control or small pumps — but each channel is limited to 5 A resistive so heavier or inductive loads will need a contactor.
OP-SBWF03 Wi-Fi Socket Box Timer
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A simple plug‑in 24‑hour captive‑tappet timer that provides repeatable on/off control in 15‑minute steps via a BS1363 shuttered socket. Mains‑synchronised, low power consumption and fitted with a three‑position manual override; best for routine daily control of resistive domestic loads or as a low‑voltage controller for a contactor where higher currents are present.
OP-TIP1000 24 Hour Plug-In Timer
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£38.85A slim battery transmitter and a mains receiver that together form a programmable RF room thermostat for domestic heating. The Optimum Vibe OP‑TPISTAT supports six daily temperature periods, uses a pre‑linked 868 MHz radio link, and provides volt‑free switching via a 230 V receiver with a 10 A resistive rating—suitable for most combi boilers and retrofit situations where a wireless room stat is preferred.
OP-TPISTAT Optimum Vibe (RF)
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£40.99A compact, electromechanical 24‑hour analogue timeswitch for single‑circuit daily scheduling. The OP‑TS111.1 uses a synchronous motor and 15‑minute captive tappets to provide repeatable on/off control; contacts are rated 16 A resistive (8 A inductive) and the unit is suitable for immersion heaters, lighting (quoted LED load up to 100 W) and basic heating or ventilation circuits.
OP-TS111.1 Synchronous Timeswitch 24 Hour
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A compact, panel‑mount electromechanical daily timer that delivers repeatable 15‑minute on/off steps from a volt‑free SPDT contact. The OP‑TS111.2 (Optimum, TFC Group) is a simple, robust choice for panel‑installed lighting or heating control where mains‑powered daily scheduling is sufficient and a contactor can be added for non‑resistive lamp types.
OP-TS111.2 Panel Mount Timeswitch 24 Hour
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