Features and Benefits: Sanialarm is a small battery powered unit which can be fitted to the lid of most of the Saniflo range. In the event that the unit malfunctions and the water level therefore rises too high, the alarm will trigger and emit a high pitched sound. Suitable for new or existing Saniflo installations in all types of bathroom suites SaniAlarm is quickly fitted onto the lid of the Saniflo unit. Insert the Batteries (not supplied) in the case. Carefully drill a 10mm hole in the lid of the unit where indicated in the instructions. Spread some silicone grease around the plunger tube and insert it through the lid Fit the SaniAlarm on top of the Plunger tube. Switch to the ON position.