Line Voltage Monitor, Contact Form SPDT, Delay Type Adjustable Anti-Short Cycle, Display Type LCD, Frequency 50/60 Hz, Maximum Control Voltage 240V AC, Maximum Voltage Measurement 300V AC, Memory Storage 5-Fault, Minimum Contol Voltage 18V AC, Minimum Voltage Measurement 80V AC, Monitored Measurements Line Voltage, Normally Closed Output Current 10 A, Normally Open Output Current 10 A, Operating Temperature - Maximum 158 Degrees F, Operating Temperature - Minimum -40 Degrees F