I turned off the electric range electric supply at the main panel, then pulled the stove out from the wall. After cleaning up the crumbs from years of preparing meals, I unplugged the range from its 3-prong socket. When I tried to plug in the FireAvert, I discovered that the range outlet was mounted so close to the floor that it wouldn't fit into the socket. Thirty minutes later I finally got the screws removed holding the electrical box against the wall, repositioned it slightly higher off the floor, and installed the screws. The rest of the FireAvert installation went easily. After restoring power to the stove, I pushed the fire alarm test button while my wife watched the stove to see when the power went off. The FireAvert responded about 20 seconds after the fire alarm started sounding. Because the FireAvert's electric prongs are mounted in the center of the FireAvert housing, it requires about a quarter-inch more clearance from surrounding objects than the plug on the range. In my case it was the floor that prevented plugging in the FireAvert. Because I'm experienced with electrical work, know how to safely do electrical wiring, and was fortunate that the outlet for our electric range was mounted on the wall instead of inside the wall as are all the other electric outlets in most homes. Therefore, I was able to easily relocate the electric outlet box the quarter-inch needed to allow the FireAvert to fit into the receptacle. The FireAvert plugs into the 220V outlet for the range, then the range plug is inserted into the FireAvert's outlet, and the whole assembly easily tucks under the stove when the range is moved back into position against the wall. So, before ordering a FireAvert, carefully examine the position and orientation of your range outlet. First, make sure you order the appropriate version, either 3-prong or 4-prong to match the outlet your stove is plugged into. Then, if for any reason, you aren't sure that the FireAvert will fit into the electrical outlet for your stove, order the pigtail adapter/extension available from FireAvert. With the extension you won't have to relocate your outlet if the FireAvert doesn't fit because the outlet is too close to the floor, an intersecting wall or the top of the opening under the stove where all the electrical cord is stowed when the range is pushed up against the wall. You may have to rearrange the range power cord and FireAvert adapter so they will fold up under the stove as you push the stove against the wall. In my case we used a broom handle to push and pull the electrical cords into a more convenient position as the stove was pushed against the wall.