It have a strong advantage over conventional relays because they do not require a constant supply of energy, or voltage, in order to operate as needed. Due to their energy efficient nature, impulse relays are beginning to be utilized in a very large number of different electronic applications throughout residential buildings as well as in industrial and commercial structures.
An impulse relay can replace toggle switches in any given electrical application or system, such as a household light switch. The toggle switch with a common relay requires constant electricity applied to the coil, so that when the circuit is completed using the switch, the charged pulse reaches the electronic device. An impulse relay would allow that same device to receive power using a push button switch that begins and ends the pulse of electricity instead of a toggle switch.
The impulse relay has electricity applied to it with one push, or pulse of electricity, and the second push turns the relay off. When an impulse relay is used, an appliance can be turned on in one room, and turned off from a different location, because it is the impulse relay that is maintaining the electricity, and providing the source of power to the appliance, not the switch itself.