A metal detector at the gate is only as good as the choice behind it. Pick one that is too basic and it misses what matters; pick one that is set wrong and it beeps at every belt, so guards stop paying attention and queues build up at the gate. The right metal detector machine depends on who walks through, how many people come at once and what you are trying to stop. This guide covers the full KT India range of door frame (DFMD), pole type and hand held (HHMD) metal detectors, how to choose and set them up, and what to install at schools, malls and factories.

Schools need a detector that catches what matters without stopping every child for a belt buckle.
KT India metal detector range

Product	Best for	Key details
Sivananda CHECKMATE SM4F Single Zone	Factory exits and pilferage screening	Single zone, detachable FRP frame
ZKTeco ZK D1010L Single Zone	Offices, small schools and events	Single zone, 100 sensitivity levels, traffic counter, waterproof base
Hope 700243 Three Zone and HCS Three Zone	Schools, clinics and office lobbies	3 zones show whether the metal is at head, waist or feet level
6 Zone D 1065, D1065 L and 6 Zone with Head Count	Colleges, hospitals and banquet halls	6 zones, adjustable sensitivity, alarm and footfall counting
8 Zone DFMD and Ultra High Sensitive DFMD 8 Zone	Malls, multiplexes and hotels	8 zones, waterproof design, strong anti-interference
DFMD with CCTV	Sites that need a record of each alarm	8 zones, dual CCTV, pinpointing, automatic passenger count
ESSL 9 Zone and Godrej Nine Zone	High-traffic malls, metro and railway entrances	Multi-zone pinpointing for busy entrances
18 Zone DFMD, 18 Zone ESSL and 18 Zone with Software	Airport-style screening, stadiums and government buildings	18 zones; remote control, alarm counting and TCP/IP on selected models
H 18 Zone 700318 and 700318G with CCTV	Large venues that want a camera and headcount	18 zones, pinpoint accuracy, auto settings; the G model adds CCTV and headcount
H 18 Zone for Nonferrous	Jewellery, copper and precious-metal units	18 zone model for nonferrous materials
33 Zone DFMD and 33 Zones Garret	Maximum-security entrances	33 detection zones for the finest pinpointing
CEIA Multi Zone and CEIA SMD600 Plus	Public-safety screening where discrimination matters	Premium multi-zone detectors with high discrimination
Pole Type 6 Zone D468, MDS100 and CEIA MSD	Temporary checkpoints, events and narrow gates	Two-pole walk-through, quick to set up and move
Scorpion 700139, 700140 LED Bar and 700139K	Everyday frisking at gates	Sensitive hand held detectors with sound, light or vibration alarms
CEIA PD140E and CEIA PD240	Corporate and high-security sites	Lightweight professional HHMDs for indoor and outdoor use
Garrett Superwand and Garrett Super Scanner	Event and venue security	LED alerts; the Superwand runs about 80 hours on a battery
ESSL HM520PRO and ZKTeco ZK D160	Malls, offices and schools	Lightweight; 40 h and 70+ h battery life, dual alarm modes
GSCAN HZ 10	Busy checkpoints	Fast scanning with few false alarms
Sivananda SM 7CA and MTMHD 003	Precious-metal and coin screening	Ultra-sensitive hand held detectors for small items
KTI Under Vehicle Search Trolley Mirror	Vehicle gates	Wheeled under-vehicle mirror with torchlight
Industrial Metal Detector	Food, pharma and packaging lines	Detects metal contamination in products on the line
Boot for DFMD and DFMD Controller for 3 Zone	Keeping existing DFMDs running	Spare boots and a replacement controller

Door frame, pole type or hand held?

• Door frame metal detector (DFMD): a walk-through arch that screens every person who enters. Best for any entrance with steady footfall.
• Pole type detector: two slim poles instead of a full arch. Quick to set up, easy to move, and good for events, temporary checkpoints and gates where a full frame won't fit.
• Hand held metal detector (HHMD): used after a DFMD alarm to find exactly where the metal is, and on its own at small gates, staff entrances and for bag checks. Every DFMD needs at least one HHMD beside it.

How to choose, step by step

1. Count your peak footfall. A school gate at 8 am or a mall on a Sunday evening sets the requirement. Plan one DFMD lane for every few hundred people per hour, and add lanes rather than rushing people through one.
2. Decide how many zones you need. A single zone detector tells you that metal is present. Three and six zone models such as the Hope 700243 or 6 Zone D 1065 show roughly where. With 18 or 33 zones, the guard can see where on the body to check, so frisking is faster and less intrusive.
3. Check sensitivity and discrimination. You want a detector that can be tuned to ignore keys, coins and belt buckles but still alarm on a knife or a weapon. Look for adjustable sensitivity levels and good anti-interference.
4. Think about the location. Outdoor or semi-open gates need a waterproof base and a frame rated for heat and dust. Keep the DFMD away from moving metal such as lifts, shutters, motors and heavy cables, which cause false alarms.
5. Add the features you will actually use: footfall counting for reports, CCTV to record each alarm, software or TCP/IP to monitor several gates, and battery backup for power cuts.
6. Pair it with hand held detectors and, at vehicle gates, an under vehicle search mirror.
7. Plan installation and calibration. Fix the frame level on firm ground, set sensitivity on site with test items, and train guards on the alarm-and-frisk routine.

The door frame tells you that something is there; the hand held detector shows you where.
Kit by site type

• Schools and colleges: a 3 zone or 6 zone DFMD with head count at the main gate, a pole type detector for annual day and sports events, and two hand held detectors for the guards. Keep the sensitivity set so the check is quick and calm for children.
• Malls, multiplexes and hotels: an 8 zone or 9 zone DFMD at each entrance, separate lanes for men and women with a frisking cabin, an HHMD per lane, and an under vehicle mirror at the parking entry.
• Factories and warehouses: a single zone DFMD at the staff exit to stop pilferage of tools and parts, HHMDs for random checks, and an industrial metal detector on food, pharma or packaging lines to keep metal out of the product.
• Jewellery, copper and precious-metal units: the H 18 Zone for nonferrous material at exits, with an ultra-sensitive Sivananda SM 7CA hand held detector.
• Hospitals, banks and offices: a 6 zone DFMD at the main lobby and a Scorpion HHMD at the staff gate.
• Stadiums, temples, government buildings and VIP events: 18 zone or 33 zone DFMDs, DFMDs with CCTV and headcount, and pole type detectors for extra lanes on peak days.

In factories, exit screening protects your stock as much as your people.
Keep it working
Test the DFMD every morning by walking through with a standard test piece, and log the result. Recalibrate after moving the frame or adding new equipment nearby. Keep the frame dry and clean, and check cables, the base and the boots for damage. Charge hand held detectors at the end of each shift and keep a spare. Have a service visit at least once a year; KT India also stocks spares such as the DFMD controller.
Frequently asked questions
How many zones do I need?
For a school or office with modest footfall, 3 to 6 zones is plenty. For a mall, metro or stadium, 8 to 18 zones speeds up frisking. Use 33 zones for maximum-security sites.
Are walk-through metal detectors safe for pregnant women and people with pacemakers?
Walk-through detectors use a low-strength magnetic field. As a courtesy, many sites offer a hand held check or manual frisking instead. Anyone with a medical implant should follow their doctor's advice.
Why does my DFMD keep giving false alarms?
Usually the sensitivity is set too high, the frame is not level, or there is metal or electrical interference nearby. Recalibrate on site, and keep the frame away from lifts, shutters and motors.
Can one DFMD handle a school gate?
Only if entry is spread out. If everyone arrives within 15 minutes, plan two lanes or add a pole type detector at peak time.
Screen smarter at every gate. Browse the full range of door frame metal detectors and hand held metal detectors, or use Enquiry Now on any product page for a site survey and bulk pricing.