Mier Products’ Wireless Drive-Alert Sensor/Transmitters detect the changes in the magnetic
eld (movement of metal) within 14’ in every direction. Therefore, they will not false-alarm from
animals, wind, rain, etc. The Transmitter electrical boards are epoxied and also encased in a
durable, weather-sealed, NEMA 4X housing 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 alkaline batteries, 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 trafc to prevent false
alarms. The Sensor can be placed in any orientation, parallel or perpendicular to the drive. Any
movement of the Sensor will cause an alarm for asset protection.
Transmitting range from the Transmitter to the Control Panel/Receiver is 500 feet if placed on the
ground, up to 1000’ if mounted 2-4’ high on a metal, wood or concrete post or a convenient
building, and up to 1/2-mile if a long-range system is ordered, which includes a DA-660 reception
booster antenna. (See the Long Range Options page to learn more about the booster antenna,
adding repeaters, or adding additional DA-100 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 trafc, but would also reduce
the detection sensitivity in the driveway. (See next page for directions)
Lightning strikes cause a large disturbance in the magnetic eld, 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. (See next page for directions)
The Differences between Mier’s three Sensor/Transmitter Choices:
The 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 1000 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 Remote-Sensor/Transmitter: Is just 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
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
5
Wireless Drive-Alert Sensor Installation Guide
DA-612TO
DA-610TO installation with the Sensor/
Transmitter hidden under landscaping
next to the driveway.
