General Description The Thunder works with any standard vehicle’s existing siren, creating a new tone half a quarter or a combination of the original tones. This low frequency tones drives one or two special designed low frequency speaker which mounted in front of the vehicle.
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General Warning 1. The use of emergency warning devices does not ensure the safety of the operator. The operator is responsible to ensure safe operation of the vehicle regardless of whether the warning device is in operation or not 2. The effectiveness of this or any warning device is highly dependent on proper installation and maintenance.
Mechanical Installation Speaker Installation 1. Mounting bracket for speaker can be mount in several position de- pending on your vehicle. 2. Decide the mounting location, mark and drill six mounting holes. 3. Secure the bracket to the vehicle with supplied hardware. 4.
Dip Switch Setting Configure Tone Duration To select tone duration, set dip switch position 3, 4 and 5 to the position base on the table below: 15 second tone FIGURE 4 Dip switch sw3,4&5 configuration SWITCH 3 SWITCH 4 SWITCH 5 TONE DURATION 7 seconds (default) 10 seconds...
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Configure Tone Mode FIGURE 5 Dip switch sw6,7&8 configuration To select tone mode, set dip switch position 6, 7 and 8 to the position base on the ta- ble below: SWITCH 6 SWITCH 7 SWITCH 8 TONE MODE 1/4 primary siren tone frequency (default) 1/2 primary siren tone frequency Mix Frequency tones System Operation...
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MANUAL AND INSTALLATION PROCEDURE FOR THUNDER LFA SIREN BOX SEE TABLE BELOW VEHICLE SPECIFIC MOUNTING BRACKET 189-0200 THUNDER SPEAKER 1 (OR 2) 655-0010-01-01 THUNDER - LOW FREQUENCY AMPLIFIER SIREN BOX - REV 0 VEHICLE SPECIFIC BRACKET LIST PART NUMBER DESCRIPTION 935-0082A Explorer2013+ Thunder Speak Mount Brkt...
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WARRANTY WARRANTY D & R Electronics warrants its new products to be free from defects in material and workmanship, under normal use and service for a period of one year on parts replacement. This warranty applies only to original purchasers acquiring the product directly from D&R Electronics, or its authorized dealers.
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