The Temp-Alert is ideal for reliable monitoring of areas where high and low temperature limits are critical. The Temp-Alert monitors temperatures in the range of -30°F to +130°F (-34°C to +54°C). Simply adjust the temperature limit arms to personalize for your application. When temperature exceeds the setting, the sensor will close the contact, which may be used to activate alarm systems, telephone dialers or other remote warning devices.The Temper-Alert unit can be mounted to any wall or vertical surface. Multiple Temp Alerts may be wired in parallel to a single input.