1) Size: 71 x 56 x 23 mm;
2) Main materials: ABS plastic, PCB, electronic components;
3) 9V battery not included;                                                                                                                                                  4) Simply installation on the wall or other places;
5) 130 decibel alarm can be heard up to 100 meters away;
6) High quality, looks cute and lovely;
7) Easy to use and very small;
8) 0.6 - 1.5 meters wire with sensor for deep water detecting;
9) Low battery alarm to make sure unit keeping working.