Dwyer Instruments TSS2 series dual stage temperature switch regulates temperature for heating or cooling. The TSS2 accepts two inputs with independent relay outputs for dual stage temperature control. Customisable with 34 programmable parameters to control functions. Access to all parameters, except set point, can be secured with a password.Input Type = NTC, PTCOutput Type = SPDT RelayNumber of Inputs = 1Number of Outputs = 2Supply Voltage = 24 V ac\/dcSize = 76.2 x 36.12mmMinimum Operating Temperature = 0°CMaximum Operating Temperature = +70°CPanel Depth = 61.91mmIP Rating = IP64