OPERATION INSTRUCTIONS
The Drive-Alert is adjusted at the factory for maximum sensitivity for the probe and minimum time for the whistle. To adjust
these, open the control panel and adjust the small pots according to the diagram on the inside cover (see FIGURE 2). The
whistle “timer adjust” is adjustable from 1-12 seconds and the LED 3 will light.
When rst plugged in, the red blanker LED 2 will remain on for only 1 minute, and the Drive-Alert will be muted for
approximately 1 minute each time the electrical power is turned on. It provides time for the electronic circuits to initialize.
During normal operation, the noise blanker detects unwanted electrical interference and mutes the Drive-Alert for a few
seconds. It has been adjusted at the factory. The blanker light should be off during normal operation.
To test the Control Panel, it is possible to rub your nger simultaneously on the three terminals to which the sensing
probe is attached. This should cause the system to go into false alarm. This will occur with or without the sensing probe
attached. Be sure the terminal screws are tight while making the test. If the system responds to this test, in almost all
instances it indicates a properly functioning control panel.
If false alarms occur, remove the sensing probe wires fron the Drive-Alert terminals. Let the power remain turned on to the
control panel. If the false alarm stops, then the most likely cause of the problem is moisture in the sensing probe cable.
Radio transmitters, cell phones, cordless phones, and wireless modems within 10 feet of the control panel may cause
false alarms.
Additional devices can be attached to the Drive-Alert on its terminals at the bottom of the control panel. When the whistle
switch is turned off, the Drive-Alert terminals can switch customer provided electrical current up to 5 AMPS. Never attach
any device that puts more than 30 volts on the Drive-Alert terminals. When the whistle switch is turned on, the Drive-Alert
terminals have available 24 VDC at 100 MA. Refer to the diagrams in this manual for hookup instructions.
Mier Products has a hard-wired “timer control” accessory available. The DA-505 Timer Control attaches to the Drive-Alert
terminals. This Timer Control is adjustable from 45 seconds to 45 minutes. It switches up to one thousand watts of 115 volt
power for outside lights. Mier Products also has a hard-wired chime available. The DA-655 Chime with Volume Control
is the most popular accessory for the DA-500, and is highly recommended for drive-up window or business applications.
Mier also has a wireless “timer control” kit (DA-606LK) which adjusts from 45 seconds to 45 minutes and includes a DA-
071 Light Switch and DA-072 Lamp Module to control lights as an alert in addition to the audible alert. Furthermore, Mier
has a wireless chime transmitter (DA-066) which triggers wireless DA-068 Plug-in Chimes and DA-070 Battery-powered
portable chimes.
Along with Mier’s accessories, the DA-500 can also trigger your other devices such as surveillance, bells,
sirens, signs, gates, and much more!
FIGURE 2
DA-500 CONTROL PANEL ADJUSTMENTS
BLANKER ADJUST
BLANKER
LED 2
TIMER ADJUST
MAX MIN
SENSITIVITY
MAXMIN
LED 3 ALARM
1 AMP FUSE
RELAY
POWER
LED 1
MAXIMUM CONTACT CURRENT IS 100 MILLIAMP AT
24 V WHEN USING DRIVE-ALERT VOLTAGE SUPPLY
SENSOR RELAY
DO NOT CONNECT TO 120V AC
5
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