Warrick-Gems Sensors & Controls 27A1D0 Direct Sensor 4700 Ohms 1NO/1NC Contacts 120V

The Warrick-Gems Sensors & Controls 27A1D0 Direct 120V 4700Ohms 1normally open & 1normally closed is a single-pole, double-throw switch intended for use in a variety of HVAC applications. It has two switching contacts: a normally open and a normally closed, and it runs directly on 120V AC power. The normally open contact stays open and the normally open contact stays closed during an inactive switch, creating a closed circuit. When the switch is activated, it flips, closing the normally open contact and opening the normally closed contact, breaking the previous circuit and starting a new one. The 27A1D0's switching capability enables it to regulate several HVAC system operations.