We bought two of these indicators to augment the sometimes difficult to see sight windows on an over-head hopper bin. We also placed the Lev-Alerts on the opposite side of the bin to enable bin levels from a more convenient view point. Determining placement was easy because we used measurements from sight windows already existing on the opposite side wall of the bin. We put them to immediate use the day we got them, and so far, they work as promised.
Night viewing is a little difficult without the presence of a yard light or flashlight, but their reflectivity is very good.
Some comments... if making improvement requests, I would suggest indicator to be a bit larger (my eyes must be getting older). Also, as BinLady suggests, a lower price would be appreciated.
We purchased the Lev-Alerts over another similar product because of the ability to incorporate an electrical switch in the future.

easy to install, saves climbing ladders.

Bought 5 3 years ago. Three no longer work. We have to climb up and pound on side to get them to release. Nothing binding against them. Springs may lose their spring after a few years

simple to install work great, better then climbing the ladder or throwing rocks at the bins

we received the product in a timely manner and in good condition. that is all we can ask of a supplier. thank you

We bought two of these indicators to augment the sometimes difficult to see sight windows on an over-head hopper bin. We also placed the Lev-Alerts on the opposite side of the bin to enable bin levels from a more convenient view point. Determining placement was easy because we used measurements from sight windows already existing on the opposite side wall of the bin. We put them to immediate use the day we got them, and so far, they work as promised.
Night viewing is a little difficult without the presence of a yard light or flashlight, but their reflectivity is very good.
Some comments... if making improvement requests, I would suggest indicator to be a bit larger (my eyes must be getting older). Also, as BinLady suggests, a lower price would be appreciated.
We purchased the Lev-Alerts over another similar product because of the ability to incorporate an electrical switch in the future.

easy to install, saves climbing ladders.

Bought 5 3 years ago. Three no longer work. We have to climb up and pound on side to get them to release. Nothing binding against them. Springs may lose their spring after a few years

simple to install work great, better then climbing the ladder or throwing rocks at the bins

we received the product in a timely manner and in good condition. that is all we can ask of a supplier. thank you