This water level alarm comes with three sensors, a run-dry sensor and two overflow sensors. Each sensor comes with a holding device which can be attached with silicone or can be clamped to horizontal or vertical panes. The holding devices can also be combined. The control unit has an optical indicator for each sensor and an alert sound emitter. The switched socket outlet has a switching capacity for pumps of up to 230V / 1,800W (at 115V / 900W).