This Resideo Switching Relay is a Double Pole Single Throw (DPST), Normally Open (N/O) device operating at 24 volts. The relay is designed to control the flow of electricity within an electrical circuit, acting as a switch that responds to signal changes. The DPST configuration means it has two separate circuits that can be controlled independently, while the N/O status indicates that the relay is in an 'off' state when no power is applied. This product is suitable for use in various applications including heating and cooling systems, where it can help regulate temperature by controlling the operation of fans or other devices.