The S-Series Master Wiring Centre is designed to work with our 4iE, 3iE, tempo and S-Series range of thermostats and your heat source, i.e. boiler. The wiring centre can control up to 4 zones and connects room thermostats to their corresponding actuators. Additional zones can be added using the S-Series 4 or 6 zone Slave units. When the wiring centre is in operation, 230v output will switch relevant zone actuators, underfloor heating pump and valve on. Each zone is indicated by individual LED’s on the wiring centre. The wiring centre can be adapted either on a DIN rail or directly on a wall.