The 295 Series Remote Siren Amplifier(Flush Mount Head)-295HFS2 from" Whelen Engineering" has two different real-time diagnostic tests include: Continuous dynamic testing during normal siren operations and a unique silent test while in the Radio mode with the Manual button depressed. During either operation, one or both red LED lamps will extinguish instantly upon sensing a siren or speaker(s) malfunction.Si-Test � instantly assures you of proper warning capability and two speaker operation for high-risk situations. It also eliminates the need for annoying siren blasts during vehicle inspections or shift changes. Only Whelen offers this "silent" testing, day or night.

• Model 295HFS Series amplifiers are microprocessor controlled and rated for 100 or 200-watt output
• PTT (Push To Talk) switch on unidirectional microphone over-rides all siren functions
• All siren functions are backlit in a soft, non-glare green for ease of nighttime visibility
• An adjustable bail bracket allows mounting in a variety of positions
• In 295HFS Models, Si-Test � provides a significant risk management advantage
• Solid State over/under voltage shutdown and output short circuit protection
• Input polarity protection
• External spade-type fuse
• Adjustable bail bracket allows mounting of unit in a variety of positions
• Locking quick disconnect plug for ease of service or replacement
• Selectable 100 or 200-watt output, standard on HFS Series

Control Head

• Height: 2-7/8"(73mm)
• Width: 6-1/4"(159mm)
• Diameter: 2-3/8"(60mm)

Amplifier Size

• Height: 2-3/8"(60mm)
• Width: 6"(152mm)
• Diameter: 7"(178mm)
• Weight: 3-1/2 lbs (1.6kg)