Servers and Storage for Recordings and Site Data
How a site chooses servers and storage for video, access logs, and applications, and what RAID and a backup copy each protect you from.
Networks: The Cabling Under Every Other System
How copper, fiber, switches, and racks carry cameras, readers, and the office, and why a labeled test result matters more than a tidy photo.
Public Address and Voice Evacuation
How one audio system plays music, pages staff, and speaks evacuation messages, and what EN 54 changes about the amplifiers and the zones.
Intrusion Alarm: Zones, Sensors, and Arming
How an intrusion panel uses zones and partitions, which sensor fits a door, a room, or glass, and what remote arming actually changes.
Access Control: Doors, Readers, and Attendance
How a door decides who may pass, how card, fingerprint, and face readers differ, and how the same system can record working hours.
Fire Alarm: Conventional and Addressable Systems
How a fire alarm warns the building, how a conventional zone differs from an addressable point, and what commissioning has to hand over.
CCTV: Cameras, Recorders, and What Coverage Means
A short sheet on analog, HD, and IP cameras, what a DVR and an NVR each record, and how coverage, night view, and retention are chosen.
A Building Management System in Plain Terms
What a BMS actually supervises, how BACnet, Modbus, and KNX bring plant onto one screen, and what an operator should see when something fails.
Automation Systems: PLC, HMI, Drives, and SCADA
A plain-language sheet on how a PLC, an HMI, variable speed drives, and a SCADA screen divide the work of running a process.
Standby Generators: What the Set Actually Includes
A standby generator is an engine, an alternator, and a transfer panel. This sheet covers ratings from 10 kVA to 2,500 kVA, canopy types, and the start sequence.