.provide clients with reliable, pre-qualified, knowledgeable and vetted designers and engineers. We help both large established companies as well as individuals connect with the expertise they need for their project. If you want to get this job done in the right way, use Cad Crowd to connect with reputable fire protection freelancers. Fire protection is all about having a good fire alarm system. On the other hand, a fire alarm system includes several devices that have one goal – to detect and warn individuals via audio and video appliances in cases when fire, smoke, CO or other threats are present. There are situations when these alarms are triggered automatically thanks to heat detectors or smoke detectors. But, these alarms can be activated with the help of manual fire alarm activation equipment like pull stations or manual call points. Alarms can come in the form of horns or sounders mounted on walls, or motorized bells.