Bests & Worsts Reviews from Amazon

I have had this for several months now and i feel i can give it a very honest review after using it often. When i first read about this item i thought it would be the greatest thing. I could mount it in my travel trailer, set up my ramps and pull up on the ramps until they camper was level. If it worked like that then it would be great. But it does not work like that and it actually takes longer to set up than with a cheap, battery less bubble level. First get the camper somewhere and perfectly level it and calibrate the device to that initial setting. If it is not perfectly level, then every time it is set up level per the device it will be incorrect. Second the device uses a button cell battery- seriously- a tiny button cell battery that sits in it in a camper that gets in excess of 100 degrees. Be ready to replace batteries often because in extreme heat they wont last, and when opened up to replace the batteries the device moves slightly and now the level calibration is no longer correct. If the camper is aluminum skinned or has to transmit thru many walls or many feet in distance to the camper the device is virtually useless, it wont transmit thru thick walls. As i discovered bluetooth does not transmit thru the aluminum skinned camper shell. What i thought is that i could sit in the cab of my truck, watch my cell phone and when it indicates level put on the brakes and choc the wheels. The reality, the transmitter wont reach into the cab of the truck, so now i have to depend on another person to hold the device and relay the information to me. Well it wont transmit thru the camper aluminum so i have to have the person stand near a window in line of sight of the transmitter and tell me what to do. The problem is the device is so jumpy in readings it is tough for them to tell me to stop quickly enough. The bubble level is much easier. Oh and did i mention battery life? You pay $140 bucks and then the battery is dead when you get to your site. What is the fallback plan? a bubble level. Save money, save frustration and headache - pass on this. At least i can see a bubble level thats on the front of the camper. Oh yeah and while setting up your camper to level it front to rear i get dirty greasy and grimy. Who wants to hold their $300 -$600 cell phone and get grease and grime on it because you have to operate the cell phone to scroll thru options to find level (that is if it transmits thru the skin of your camper)? I have my wife and kids relay the information on it because it wont pass thru the walls of my camper, they all complain the same issue that the display is confusing, they dont know if the picture indicates that they need to raise that side with the number or if that side is that much higher than the other side. I am sure this device seems great to the person who made it, but for those of us using it, nothing beats a bubble level, it always works when you need it to. Do you really need an argument inducing piece of electronics when setting up your camper? ANOTHER ALTERNATIVE: While I have not tested this one it looks promising and is much cheaper. Wish I would have tried it, search amazon for "RV LEVEL Micro - Wireless RV Travel Trailer Camper Level Indicator for Android " FOR A FREE ALTERNATIVE- just do an app search look up "camper leveler free edition" or "caravan level" there are so may aps out there that tell you the same information and you already have your phone with you, why buy yet another device.