The control box is hooked up to one or more alarm circuits, but it also has its own power supply. It monitors the circuits and sounds the alarm when they are closed or opened (depending on the design). But once the alarm is triggered, the control box won't cut it off until somebody...
With the new wires in place, opening the door (closing the switch) sends an electrical current to the brain in addition to the inside lights. When this current flows, it causes the brain to sound the alarm. As an overall protective measure, modern alarms typically monitor the voltage in ...
X10 allows compatible products to talk to each other over the already existing electrical wires of a home. All the appliances and devices are receivers, and the means of controlling the system, such as remote controls or keypads, are transmitters. If you want to turn off a lamp in another...
Cars couldn't be started with the simple turn of a key; a strenuous cranking would be required to get the pistons moving. Wires would be strung everywhere, creating a safety hazard and an unsightly mess. Thankfully, batteries provide us with a mobile source of power that makes many modern...
From fire extinguishers to smoke alarms, learn some basic preventative measures to avoid a house fire and keep your family safe.
Now that we knowhow the MQ-3 alcohol sensor works, we can connect all necessary wires to an Arduino Uno and see how it functions. We'll start with the analog component and then go on to the digital part, which is pretty simple. ...
Flashlights, hearing aids, cell phones and other portable devices would be tethered to electrical outlets, rendering them awkward and cumbersome. Cars couldn't be started with the simple turn of a key; a strenuous cranking would be required to get the pistons moving. Wires would be strung ...
Flashlights, hearing aids, cell phones and other portable devices would be tethered to electrical outlets, rendering them awkward and cumbersome. Cars couldn't be started with the simple turn of a key; a strenuous cranking would be required to get the pistons moving. Wires would be strung ...
We are beginning to map our neighborhoods. We assist with smoke alarm installation and giveaways. We assist the Fire Department with other community events like “Safety on Wheels”, etc. For local searches for missing persons, at special community events with a booth to promote CERT and as ...
Put your baby on her back to sleep Do not let anyone smoke in the same room as your baby Do not let your baby get too hot or too cold Do not cover your baby's head while she's sleeping Place your baby down to sleep, so that her feet are at the foot end of the cot ...