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The VMS-620 is a volumetric intrusion detector designed to identify human beings in open areas, by sensing mass changes, as well as utilizing Line Frequency Modulation to improve the detection of moving targets, which standard Doppler detectors cannot handle well.

VMS-620 Detection zone pattern
Detection zone pattern

This device can be used to protect rooftops, gates, and parking lots, as well as solid objects, such as vehicles. It can also be used effectively in combination with our IMB series of detectors, particularly where the detectors meet. Upon detection of an intrusion, the VMS-620 outputs an alarm through a normally closed dry relay contact, by opening it.


Technical specifications

Resistance to movement of animals and birds:at 2m or more
Thunderstorm power line fluctuations resistance: up to 1000V
An alarm occurs when:

- A person moves in the zone at a depth of 1m

- The sensor casing is open

- Power is off or reduced to 10.2V DC

Temperature range:-40° to +65°C (-40° to +149°F)
Power rating: 12V - 24V DC
Power consumption: 40 mA @ 24V DC
Detection zone length: 4-20m (13-65ft)
Maximum detection zone width: 16m (52ft)
Relay contact parameters: 85V DC, 100 mA
Transceiver size:105x65x45mm (4.1"x2.5"x1.7")
Weight:350g (0.77lb)


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