Review on Instapark Bright Yellow Flashing Battery by Christopher Gulledge

We have a septic tank and every time we a group of people stay for a few weeks we get clogged TS at the inlet to the septic tank T. I have to dig the cesspool T to cover and clean . The problem most often occurs when the floor drain in the garage overflows as the house lines fill up. This time I bought an alarm and lowered the sensor into the floor drain. As usual, a week after everyone had gone home, the alarm clock rang. A bright flash of light and a sound that demands your attention makes it easy to understand what's going on. I could hear the noise through the heavy, closed outer door that separates the garage from the house. Thanks to the alarm, I was finally able to clear the line before the floor drain overflowed. The only small drawback is that there is an on/off switch. That is, in order to turn on the alarm, you need to pull the sensor out of the water. Not so hot what's up. There is a very bright red LED that will flash from time to time to let you know the batteries are working. I consider this a plus.