Impulse relay turns on with an electrical impulse at the control input and turns off again with another impulse.

But GPIAAF indicates that the panel had carried a latent fault – a deformation of less than 6° in the alignment of a fire push-button retention pin – which had gone undetected during repair.

A tangible programming interface called "Push-pin" is proposed, which involves end-users in designing smart home programs for home appliance automation. Programming on the Push-pin system is based on ...