Homematic IP Multi IO Box - control unit for boilers and circulation pumps The Multi IO Box is a versatile control unit that integrates various air-conditioning and temperature control devices into Homematic IP. It can be used to control boilers, dehumidifiers, pumps, humidity sensors, timers and temperature limiters. It also makes it possible to switch between a heating function and a cooling function (changeover pilot and external signal) so that the floor heating system that is controlled by a Homematic IP floor heating actuator can also be used for cooling in the summer. It can be taught-in to the Access Point central control unit, the CCU3 central control unit or up to four floor heating actuators. - With a humidity limiter input to avoid the formation of mould as a result of dew and a temperature limiter input to protect the floor - Included: Homematic IP Multi IO Box, four screws, four rawlplugs, user manual - Supply voltage: 230 V/50 Hz - Max. switching capacity output 1: 3680