ITT HQ series diesel stationary digital sound effect module. Module measures 1.5" X 2.6" X .4" and consists of a voltage regulator, digital sound chip, amplifier, volume control and terminal strips. Runs on 9-18v AC/DC or 9-12v battery. Includes a 2.5" speaker and complete installation instructions. Bring your model train layout, diorama or doll house to life with a realistic digital sound module - HQ205 - Track digital sounds
- HQ210 - Diesel Bell
 - HQ215 - Diesel Engine Helper
 - HQ210 - Diesel Engine Fast
 - HQ910 - Station digital sounds/Diesel Engine Passing

The sound plays for 50 seconds and can be played one time using a push button switch, or continuously (at the end of play there is a 1 second reset silence) until turned off, using a toggle switch. Can also be activated with an external detection device. Place the speaker under the layout or in a building. Works with all scales. Price is per sound module.
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