Video Door Phone Dealers in Dum Dum, Kolkata

We offer high performance Fire Alarm System, which is designed to detect the unwanted presence of fire by monitoring environmental changes associated with combustion. In general, a Fire Alarm System is classified as either automatically actuated, manually actuated, or both. Automatic Fire Alarm Systems are intended to notify the building occupants to evacuate in the event of a fire or other emergency, report the event to an off-premises location in order to summon emergency services, and to prepare the structure and associated systems to control the spread of fire and smoke. Types Of Fire Alarm Systems Conventional Fire Alarm Conventional panels have been around ever since electronics became small enough to make them viable. Conventional panels are used less frequently in large buildings than in the past, but are not uncommon on smaller projects, such as small schools, stores, restaurants, and apartments. A Conventional Fire Alarm Control Panel employs one or more circuits, connected to sensors (initiating devices) wired in parallel. These sensors are devised to dramatically decrease the circuit resistance when the environmental influence on any sensor exceeds a predetermined threshold. In a Conventional Fire Alarm System, the information density is limited to the number of such circuits used.Addressable Fire Alarm Addressable Fire Alarm Control Panels employ one or more Signaling Line Circuits, slang - usually referred to as loops or SLC loops, ranging between one and thirty. Depending on the protocol used, a Signaling Line Circuit can monitor and control several hundred devices. Some protocols permit any mix of detectors and input/output modules, while other protocols have 50% of channel capacity restricted to detectors/sensors and 50% restricted to input/output modules. Each SLC polls the devices connected, which can number from a few devices to several hundred, depending on the manufacturer. Large systems may have multiple Signaling Line Circuits. Each device on a SLC has its own address, and so the panel knows the state of each individual device connected to it. Common addressable input (initiating) devices include : Smoke detectorsHeat Detectors (Rate of Rise and Fixed Temperature)Manual call points or manual pull stationsNotification appliances (Simplex systems with True Alert signals only)Response IndicatorHooter

Out Door Speed Camera, Digital Door Counting Device

CCTV Camera, fire detection

Burglar Alarm Systems, CCTV Cameras, Home Door Alarm Sensor