Networks: The Cabling Under Every Other System
Copper categories, shielding, PoE types, fiber backbone and certification — how the physical layer under cameras, doors and the office is chosen and proven.
Public Address and Voice Evacuation
PA, PAVA and voice alarm — 100 V sizing, active versus passive speakers, SPL and STI, EN 54-16/-24, and how fire-alarm integration decides what people hear.
Intrusion Alarm: Zones, Sensors, and Arming
Door contacts, glass-break, PIR and dual-tech, zones versus partitions, arming modes, EOL supervision and EN 50131 grades — how an intrusion system is built to respond.
Parking and Barrier Systems
Paid parking, boom barriers, ANPR/RFID, tariffs, lane throughput, ultrasonic and camera guidance, Find My Car, loops, civil works and commissioning.
Video Wall and AV Systems
LCD vs LED walls, pixel pitch, PPI, controllers vs matrix vs decoder, AV-over-IP, DSP/AEC audio, heat load, service access and commissioning.
Physical Security and Vehicle Barriers
Vehicle barriers, boom arms, road blockers, bollards, tyre killers, UVIS, crash ratings PAS 68/ASTM F2656, drainage, foundations and checkpoint integration.
X-Ray and Security Screening
Design a security checkpoint — X-ray tunnel classes, dual energy, penetration, WTMD zones, throughput, EMI, radiation safety and equipment selection.
How to Add a Dahua DVR or NVR to DMSS on a PC
Add a Dahua recorder to DMSS on Windows or macOS by serial number (P2P) or by local IP address, check the connection, and fix the most common errors.
Servers and Storage for Recordings and Site Data
How servers, DAS, NAS, SAN and RAID fit together for CCTV recordings and site data, with a capacity formula and a clear NVR versus VMS choice.
