Details Provides visual and/or audible indication of a call signal LED design with dimmer Front panel mode switch selects flasher, ring or both Control both tone volume and light brightness Item Code FL-7 Technical Specifications Flash Rate 2 times/sec Flasher Lens 2.5in diameter red Rear Panel Connectors One each XLR-3F and XLR-3M Power Requirements Input Voltage: 20-30V DC Input Current: (idle) <= 10mA Input Current: (max) <= 90mA Front Panel Controls & Indicators Brightness Control Three-way switch for flash and tone Tone level control Speaker Environmental 32° to 122°F (0° to 50°C) Dimensions 2.5 x 4 x 5.0in (WxHxD) (63 x 101 x 127mm) Weight 0.91lbs (0.415kg)