Topvico Water Leakage Alarm Sensor Detector, High / Low Water Level Floater, 120dB Audio, 78 inches Cable (2 Pack)

描述

- Quntity 2 pack- 120dB loud alarm voice, keep alarm to notice you or neighbors until the water dry or sensor turn off - Floater design for water level rise or decline detection - 3M double side paster for easy install - 78 inches cable, easy extend by user - Supply by 9V battery (not include), battery life will be about 12 months for normal use (low quality battery about 6 months, very high frequency alarm or testing, battery life will be shorter)