The specified DPST relays need a DC coil voltage of 5.0V in order to switch, meaning that a driver circuit will be needed to boost the voltage of the Raspberry Pi’s output up to 5.0V and drive ...

The NO Normally-Open SPST (Single Pole Single Throw) relay has an opened circuit state when no current is applied to its coil so basically it disconnects the power to the load in the inactive state. .

Same Sky has introduced a family of latching power relays with single or double coils, and 10 to 20A ratings. PRL relays, as they will be known, have silver alloy contacts and come in SPST (1 Form A), ...

The new connected relays will allow homeowners to monitor and control their energy at the circuit level, including electric water heaters, ovens, HVAC systems, or any other circuit.