Pendant The Inovonics FA205S single button belt clip pendant transmitter features a rugged design with simple, single-button activation. It comes with a belt clip or it can easily be mounted for fixed position signaling. To increase reliability, the FA205S automatically supervises the radio link, and an LED flashes with all transmissions. Key Features * Easy single-button activation * Wear it as a belt clip or mount it for fixed position signaling * LED flashes with all transmissions, including supervision, so the user knows the unit is operating Technical Specs Platform: Frequency Agile Dimensions: 3x1.6x1" (76x41x25 mm) Weight: 2.1 oz (60g) Operating Environment: 32°-140°F (0°-60°C) 90% humidity; non condensing Battery: 3.0V Lithium Battery_ 0.8 amp-hr_ CR2; BAT608 incl Battery Life: 3 to 5 years