My mom had a previous alert system that cost her more monthly and DID not work as effectively as MOBILEHELP. As a matter of fact, the pendant needed to be charged nightly! So, God forbid she had fallen while in the bathroom, no help would have ensued. A few times it had flashed incessantly during the day indicating "low battery" after being on the charger all night. As a result, I did my homework and checked out the many systems available. MOBILEHELP came out on top! My mom has the pendant with the fall sensor, a wristband unit, and a GPS tracker unit to adhere to her pants or purse when she leaves the home. When the products first arrived , we called a few times times with questions that had arisen and the folks working at MOBILEHELP couldn't have been nicer, or more supportive. They explain everything in great detail. They want you to feel at ease and know you are protected. That gives me peace of mind, as well. A few times, the fall detection unit signaled an emergency, when it was not. Once, my mom "plopped" herself on the sofa, and it was read as a fall. Although my mom was mortified that it triggered "an emergency fall", the phone responders were so caring and comforting to her. They were pleased to hear she was safe and it was a false alarm. I, as her daughter, was thrilled to see that the unit, and most importantly, the folks responding , are ready to assist at a moment's notice!! We HIGHLY recommend MOBILEHELP to everyone!