4
Wireless Drive-Alert Sensor/Transmitter Installation Guide
Mier Products’ Wireless Drive-Alert Sensor/Transmitters
detect changes in the magnetic field
(movement of metal) within 14 feet in every direction, based on a sedan traveling 5mph. Therefore,
they will not false-alarm from animals, wind, rain, etc. The Transmitter boards are epoxied and
encased in a durable, weather-sealed, box for worry free weather and corrosion protection. They
are able to detect through standard building materials such as brick, stone, vinyl siding, etc. so in
many drive-up window applications they may be installed inside the wall next to the drive. They are
powered by two AA batteries, Lithium are recommended, and include circuitry to transmit a low-
battery condition to Mier’s Drive-Alert Control Panel/Receivers when batteries begin to run low.
The Sensor (aka: probe or wand) portion of any of these Sensor/Transmitters should be placed next
to the drive or area to be monitored, and at least 50 feet from any road traffic to prevent false alarms
(see next page). The Sensor should be parallel to the drive.
Any movement of the Sensor will cause
an alarm for asset protection (ex. a tractor, a trailer, gas pump, etc).
The range from the Transmitter to the Control Panel/Receiver is 500 feet if placed on the ground, up
to 1000 feet if mounted 2-4 foot high on a wood or concrete post (never metal posts), and up to 3/4-
mile if a DA-660 Reception Booster Antenna is used. (
See the Long Range Options page to learn
more about the booster antenna, adding repeaters, or adding additional control panels
)
If occasional false alarms occur, or you are not detecting some vehicles, you can try re-locating the
Sensor, or you can reduce sensor sensitivity. There is a small blue sensitivity pot on the electrical
board. Maximum sensitivity adjustment is clockwise and minimum is counter-clockwise (note
arrow direction). Reducing sensitivity would reduce detection of road traffic, but would also reduce
the detection sensitivity in the driveway. (S
ee next two pages for directions
)
Lightning strikes cause a large disturbance in the magnetic field, so nearby strikes will cause an
alarm. It is also possible for electrical current variations in nearby power lines to cause an alarm.
The address codes for these Sensor/Transmitters, as well as the Control Panel/Receivers are pre-set at
the factory. However, if a unique address code is needed (e.g. interference from a neighbor’s Mier
wireless Drive-Alert) you can change the address codes making sure you do so in
both the Sensor/
Transmitter AND the Control Panel/Receiver
so they are different than factory spec, but still match
one another. (S
ee next page for directions
)
The Differences between Mier’s three Sensor/Transmitter Choices:
* DA-610TO Sensor/Transmitter
: Both the Sensor and the Transmitter are contained in the same
NEMA 4X enclosure. (See photo at the top left) This unit is standard with complete systems.
*
The DA-611TO Remote-Sensor/Transmitter:
The Sensor is outside the Transmitter Box, and
attached to the Transmitter by a 50’ cable (cable lengths up to 2500 feet are available). This
allows the sensor probe to be buried under or next to the driveway or area to be monitored, and
the transmitter box to be hidden up to 50’ away or placed high above ground for a better range.
The sensor should be buried 6-12 inches below ground and the cable 3-6 inches below ground.
Mier HIGHLY RECOMMENDS burying the cable in 1/2-inch PVC pipe to protect it.
Try the
Sensor and Transmitter locations above ground for a week, before burying the Sensor and cable.
*
The DA-612TO Dual Sensor/Transmitter:
Like the DA-611TO, but with 2 external sensors.
DA-611TO
Detection-distance from the sensor for a standard-size modern sedan moving 5MPH
DA-610TO
DA-611TO/DA-612TO
Maximum sensitivity
14 feet
17 feet
Factory set sensitivity
13 feet
16 feet
75% sensitivity
11 feet
14 feet
50% sensitivity
9 feet
12 feet
Minimum sensitivity
7 feet
10 feet
DA-611TO installation with the Sensor
buried under the drive and the
Transmitter hidden/mounted on a
nearby tree.
DA-610TO
DA-612TO
DA-610TO installation with the Sensor/
Transmitter hidden under landscaping
next to the driveway.
