Billy was very kind and considerate He introduced himself and asked for directions where the device was located He proceeded to show me exactly what was wrong He was very cautious and made sure that the breaker box was off before proceeding. He explained to me about the old device he also allowed me to see him replace the old device with a new device. He walked me through the entire process. He was very kind and thoughtful. If we want to get chilly we will call Billy E.