[Single Output]3,4 ports output to , one 40da solid state relay is included in the package. The mains voltage for this temperature controller is 100-240VAC. [Single alarm output] Ports 6 and 7 are alarm outputs, AC220V/DC30V 3A (resistive load) ON/NC, and relays can also be connected. [Support 2-wire sensor input] Support 2-wire thermocouple input, K, E, J, N, W3-25, W5-26 type thermocouple input is acceptable, the default is K type thermocouple input [Adjustable Fahrenheit and Celsius]Fahrenheit and Celsius are adjustable, the default is Fahrenheit, with function [Temperature digital display] PV is the current measured temperature, SV is the set temperature, and both are displayed at the same time. Color: Black Material: plastic Package Contents: 1 x Temperature Controller 1 x heat sink 1 x K Type Thermocouple Probe 1 x 40DA Solid State Relay Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.