4
Operation and Adjustment 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 first 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 finger 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 DC 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 addi-
tion to the audible alert. Furthermore, Mier has a chime transmitter (DA-066MP) which triggers wireless DA-078 Wireless Plug-in Chimes.
NOTE:
When using multiple accessories, add a DA-500LKA which provides additional relay contacts to a DA-500.
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
MAX
MIN
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
800-473-0213 ~ [email protected] ~ www.mierproducts.com
