Preventive Security System Maintenance Checklist

Most security system failures aren't sudden -- they're the result of a small issue that went unnoticed for months. A camera slowly drifting out of focus, a fence energizer losing output, a gate sensor misaligned by a few millimetres. This checklist covers what to check periodically across the systems most Kenyan properties run.

CCTV

• Lens cleanliness -- dust and cobwebs on outdoor cameras degrade image quality gradually
• Camera angle unchanged -- mounts can shift slightly over time or after strong wind
• Night vision performance -- check footage after dark, not just during the day
• Recorder storage -- confirm footage is actually being retained for the intended period
• Cable and connector condition -- especially at outdoor junction points
• Firmware up to date on cameras and recorder

Access Control

• Reader sensor cleanliness (fingerprint sensors especially)
• Door release hardware operating smoothly, without excessive delay or force needed
• User list reviewed -- former staff or expired visitor credentials removed
• Backup power for the access control panel tested

Electric Fence

• Output voltage checked against the energizer's rated output
• Vegetation cleared from the fence line -- growth touching the wire drains power and can cause false alarms
• Earthing checked -- poor earthing is one of the most common causes of a fence "not working" despite the energizer being fine
• Alarm/monitoring integration tested if fitted

Automatic Gates

• Chain, rack or belt condition checked for wear
• Safety beam alignment verified -- misalignment can cause the gate to ignore an obstruction
• Control board and battery condition checked
• Manual release lever confirmed to still work

Fire Alarm

• Detectors tested per zone, not just the panel's self-test
• Sounders/strobes confirmed audible and visible where installed
• Battery backup tested under a simulated power loss
• Fault log on the panel reviewed and cleared of resolved issues

Recommended frequency

System	Suggested check interval
CCTV	Every 3-6 months, or after any major weather event
Access control	Every 3-6 months, plus immediate review after any staff departure
Electric fence	Every 3 months, more often during rainy season for vegetation growth
Automatic gates	Every 6 months for residential, every 3 months for high-traffic commercial gates
Fire alarm	Per manufacturer/regulatory guidance -- typically quarterly for testing, annually for full servicing