H425 Diadem This twin circuit hot water and central heating programmer with indicator lights has 16 programmes available for fully pumped systems including independent programming of heating and ho..

* Complete with key for tamperproofing. * Holes in frame allow air to circulate freely. * Easy to install - flush mounted. * Max. size of programmer/timeswitch 175x100x55mm WxHxD.  ..

Replacement Battery for Danfoss Randall MK8 series including: 811, 851, 852, 841, 842 Please check your programmers battery is removable before purchasing Note: this battery is used as a backup..

Replacement Battery for Honeywell ST699B programmers. Please check your programmers battery is removable before purchasing Note: this battery is used as a backup during a power failure it does n..

Horstmann are now known as Secure ControlsH425 Tiara The Tiara has all the programme capability and features of the 425 Diadem but without the indicator lights. The Tiara is ideally suited for bot..

Traditional Daily Programmer * Complete with new backplate * Two ON/OFF periods per day * 1 hour boost facility * All day option * LED 'ON' light * Dimensions: 145x90x50mm WxHxD * Override faci..

A range of general-purpose mini-programmers which provide linked outputs for Water and Heating. The range includes a simple 24 hour electro-mechanical model plus an electronic model which offers 7 day..