Contactless flush sensor button capable of detecting hand movement in front for reduced or full flush using captive sensor technology. Supplied with an adhesive gel sticker sensor location decal to prevent the need to drill holes through fascias or worktops. Audible alarm sounds to warn when batteries are low. Suitable for concealed cisterns. Requires 4 x AA batteries (not supplied). Compatible with Dual-Flush Concealed Cisterns with 2 Pneumatic Air Hoses Surface Mounted ABS Construction Wave with 0.5m Range Low Battery Power Alarm Easy to Fit Powered by 4 x AA Batteries (Not Included) Compatible with Dual-Flush Concealed Cisterns with 2 Pneumatic Air Hoses Surface Mounted ABS Construction Wave with 0.5m Range Low Battery Power Alarm Easy to Fit Powered by 4 x AA Batteries (Not Included)