A temperature and humidity monitor helps maintain optimal plant conditions in a greenhouse. By continually measuring the temperature and humidity levels, the monitor can help prevent extreme fluctuations that can damage plant life. In addition, the monitor can provide an early warning system in the event of a power outage or other emergency. By alerting greenhouse staff to potential problems, the monitor can help to minimize the amount of damage that may otherwise occur. In addition, many greenhouse temperature and humidity monitors offer remote monitoring capabilities. With an Internet connection, this allows growers to check their greenhouse’s conditions from anywhere and respond quickly to environmental changes.