Metal Detectors in Schools A Practical Guide
The equipment decisions that determine whether school screening works in practice: false alarms, accessibility, power and weather.
False alarms decide whether it survives
A school gate that alarms on every set of keys gets turned down until it detects nothing, which is worse than having no gate. The models designed for schools preset by metal size, weight, volume and position specifically to pass coins, keys and belt buckles while still catching a knife. That preset capability, not the headline sensitivity, is what makes screening workable at 8:45 in the morning.
Accessibility is not optional
A standard archway channel is around 700 mm wide, which a wheelchair will not pass. Sending wheelchair users to a separate manual check is both slower and conspicuous. The VW-Wide runs a 2000 x 1000 mm channel so everyone goes through the same lane, which is usually the outcome a school actually wants.
Power failures should not lose the configuration
Setting up a gate properly takes time, and losing that configuration to a power cut means it gets reconfigured by whoever is available. The 8-zone school gate carries 4 hours of battery backup specifically to preserve parameters through an outage.
Weather at an unsheltered entrance
Many school entrances are not under cover. The PVC-bodied school gate is waterproof and moisture proof with the control unit mounted on top, and the VMP7000 and VW-8000P are rated for permanent outdoor use. An indoor gate at an outdoor door is a replacement cost within a year or two.
Throughput against the morning peak
School arrival is the sharpest peak of any environment: most of the population arrives in about fifteen minutes. The 8-zone gate is adjustable up to 100 persons per minute, but that figure only holds if there is a defined place to take the students it alarms on, staffed with a wand.
Growing the installation later
Requirements change. The 8-zone school gate extends to 12 or 18 zones by splitting left, right and middle detection, which means a site can start proportionate and add resolution without replacing the gate.
Frequently Asked Questions
Will the gate alarm on every student's keys
Not if it is configured properly. These gates preset by metal size, weight and position to pass everyday items.
How do we handle wheelchair users
The VW-Wide has a 2000 x 1000 mm channel so they pass through the same lane as everyone else.
What happens during a power cut
The 8-zone school gate preserves its parameters on 4 hours of battery backup.
Can the gate go outdoors
Yes, with a waterproof model. Do not install an indoor-rated gate at an unsheltered entrance.
Do we need handheld wands as well
Yes. A gate alarm needs a secondary check, and without wands the queue forms behind the gate.
Have a specific requirement
Send the dimensions, throughput and conditions. We will answer against your case rather than in general.