TK-1 - electronic duct thermostat with 1 CO switching contact enables to maintain the set temperature in two modes. Depending on the connection above the set temperature, the fan is switched on (cooling operation mode) or heating devices or fans are switched off (heating operation mode). Devices with a current exceeding the thermostat's connection capacity as well as two- and three-phase loads should be connected using contactors. It is possible to limit the range of temperature settings or to set it at a selected level (mechanical interlock). Complete with a channel probe with a 4 m cable, extendable up to 50 m.