Description: Product Name: full water overflow alarm Product material: ABS Product size: 9 * 3 * 1.5cm Output voltage: 3V Power supply mode: 2 No.7 batteries (not included in this product) Alarm sound level: About 90dB Product line length: 1m Features: 1. Long standby time, energy saving and power saving; 2. Upgrade sensitive probe, alarm when meeting water, high sensitive purified water, air conditioning water and distilled water can also alarm; 3. There is a switch button on the left side of the product to turn on and off the alarm. Package content: 1 * water leakage alarm