ST699 1 Day Classic Programmer The ST699 time control programmer can be used as a replacement programmer on gravity primary or fully pumped systems. The ST699 has a proven easy to use design. The front panel of the programmer will fit to the same backplate. Programming the timing sequence is straightforward, using the top slider switch and [+] and [-] buttons. Please note it is recommended that, in order to comply with Part L1 Building Regulations central heating systems should be upgraded to fully pumped with a fully independent programmer e.g. ST9400C. For more information on this product please visit the European Product Catalogue. Features Compact size €“ easy to operate Suitable for surface or switch box mounting Built-in battery back-up One or two ON/OFF periods per day Double insulated 12hr display with AM/PM indication
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