Alarm Latching Relay Diagram. Power limited only if connected to a power limited source. T he inductance property of the relay generates high opposite voltage across its terminals when it.
In our example well connect that pin to gpio 5 digital 5. A number of push buttons arranged in rows and columns form a matrix keypad. We are using tsop1738 as ir receiver so we need to generate the modulated ir of 38 khz.
First alert smoke alarm 9120b.
The terminals at the right numbered with 1 2 and 3 should then be connected to your microcontroller board. Hence the load connected to the relay will remain off. Such as bells horns and repeaters. Nac3 leds 15 16 tb6.