The Survival On Snow SOS F1-ND Avalanche Beacon Transceiver was rated #1 by Couloir Magazine for longest range and directional accuracy. Those features combined with the simplicity of SOS's new DSL bar graph make the SOS beacon your #1 choice. Both transmit and receive frequencies are digitally controlled for exacting tolerances which give the best usable receive-range in the industry. The DSL is digitally driven to produce the fastest and most reliable directional and visual display on the market today.

The DSL bar graph (Directional Sensing LED) indicates the search direction. Simply let the lights lead you to the buried victim. The seven synchronized range settings are engineered to keep you moving fast and on the flux line while controlling the search area.

The superior audio signal and DSL bar graph combined with the synchronized range dial give a search full control to isolate and pinpoint multiple burials without delay or confusion. The key to efficient searching is knowing what distance to travel. SOS's patented travel control system keeps you moving fast and efficiently toward the buried victim.

The SOS F1-ND provides superior power supply and battery life. The on/off switch is an integral part of the two-part harness system forcing the unit on while worn. The transmit LED verifies the unit is operational and accurately displays battery condition.

Other features include: 2 point body harness, built-in battery check, speaker, headphone jack, comfortable contoured body. The F1-ND operates on the 457 kHz frequency and is compatible with dual frequency units, but is NOT compatible with old 2.275 kHz frequency units.

Operates for approxiamately 300 hours on 2 AA batteries. 5 year SOS warranty.