The card simply connects to your (wireless) router by means of a standard network cable. You can operate the 8 relays or check the status of the input from anywhere in world.
Features Νon-volatile memory for minimum and maximum temperature Βright red LED read-out Pre-calibrated sensor Digital communication between sensor and display
The purpose of this card is to convert electronic outputs or contacts to relay contacts. This results in a practical isolation between load and driving circuit.