ME-400 Indoor Doppler Intrusion Sensor
© Brooke Clarke 2010
This sensor uses the same technology
some of the outdoor intrusion sensors (GSQ-160
inexpensively on the surplus market.
Upon opening the top cover it's
there are only three connections.
- Black = ground
- Red = positive voltage
- Green = Output Voltage
When a lab power supply (Agilent E3617A
used to slowly increase the voltage while watching the airwaves
signal using a small antenna a signal appears when the input is at
about 3 volts and the ME-400 is drawing a milliamp or so. By
V the output frequency is at a minimum and increases slightly by
time the voltage is 5.0. There does not appear to be much
strength change from 3 to 5 V so this box is probably designed to
from +5 V.
The operating frequency is in the neighborhood of 328 MHz but
tens of kHz depending on what's near the ME-400 antenna.
USQ-46, TS-2963, PP-6446 - TCw
- Outdoor Intrusion Detectors and
- now on
page (July 2007)
many types some related to sensing people
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