Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Photoelectric sensor
Review: I was happy to find this device to install at my mother's house. She is hard of hearing so it was important to find a smoke alarm that would have a visible component. The fact that it is photoelectric allowed me to install it near the kitchen where forgotten burners under food would cause it to go off, but not so sensitive that it would give a false alarm. Because my mother is short, I mounted them (I bought 2) on the wall just above eye level and within her reach so she could reset the devices if needed. Fairly easy to install although the battery drawer might be difficult to handle when the battery needs to be replaced.
