Intermatic Grasslin thermio essential H Srf Manual De Instrucciones página 62

6. Remove the housing cover.
Setting the room code
7. In the housing cover, set the DIP switch (Fig. 2/6).
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When setting the DIP switch position, note the room code table (Fig. 9).
Connecting
8. Strip the connection wires to a length of 8 mm (cross-section between 1 mm² and 2.5 mm²).
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The same room code must be set on the transmitter and the
receiver.