Battery pack 1161 is for use in Springwell Smartflush SF4B and SF103B. The pack consists of 4 AA cells with spot-welded interconnections and a good quality plug to ensure reliability. Key Features 5-6 Year Battery Life - When used in conjunction with Springwell Smartflush SF4B the battery pack will operate for 5-6 years. (3 years if used with the previous SF103B model) Reminder label - Replacement battery packs come complete with a battery check reminder label. This can be placed on the controller itself for future reference. How To Use Simply un-plug and release the used battery pack from the controller and then plug-in the new battery pack. Smartflush remembers the previous settings so there is no need to reprogram. A quick press of the manual flush button will be enough to test Smartflush is operational. Full instructions can be found by clicking the link: Battery Replacement Instructions What's Included 5-6 Year Battery Pack (3 year if using in previous SF103B model) Reminder label Fitting Instructions Our Guarantee Free technical support by phone or email Outstanding customer service Proven reliability Products that comply with legislation Products manufactured in the UK to ISO 9001 quality standards Delivery Battery Packs are despatched via 1st class post. A small handling fee of £3.90+VAT applies to orders under £99. Pricing for overseas delivery may vary. Further information can be found on our delivery page.