The part of the system they actually read
A camera is a deterrent only if someone believes it is there. The sign on the gate does that work, and it does it every day for years, which makes it the largest advertising surface the group owns.
Why they look like this
Three registers, and the split is the point
read before anything else
Every sign on every gate in Harare is yellow and black. That does the warning job and none of the other one, because nothing distinguishes one company’s sign from the next.
So we split the set. Where there is a genuine hazard the code is kept exactly, because safety is not a place to be interesting. Everywhere else the signs are Sentinel green, and they are recognised from across a street.
The set
Eight signs, and where each one goes

Walking a site
Where the signs go, in the order they are read
Street boundary
The first sign, read from a vehicle before anyone stops. It is the one that changes a decision, so nothing else competes with it here.
Vehicle gate
At the point someone has to wait. Cameras and response together, facing the driver rather than the house.
Fence line
Along the energised run, on both faces, and at every corner and gate. These are not optional and they are not a deterrent, they are a warning.
Pedestrian entrance
Where a visitor is expected to stop and be logged. Paired with the intercom so the instruction and the means are in one place.
On a real wall
Where these end up
Specification
What the sign maker needs

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