The Mammut Barryvox S2 is a compact digital 3 antenna avalanche transceiver with a 70 m search strip width. It adds guided fine search, probe indication, and pro settings for complex rescues.

What it's for

A transceiver sends a 457 kHz signal while you travel in avalanche terrain and switches to search so you can locate a buried partner. The S2 is the Barryvox with the larger function set: guidance through the fine search, deep burial and analog modes, and configurable pro settings.

How it works

Intelligent fine search guidance: patented visual and acoustic guidance that walks you through the fine search

Probe indication: once the lowest distance is found, the display tells you to move from fine search to probing

MIP display: a 2.3 in Memory in Pixel screen with 300 x 240 px resolution. It is high contrast, readable in bright sun and through polarized glasses

Rescue SEND: switches rescuers who are not searching to transmit if a secondary avalanche buries them

Auto revert to SEND: a motion sensor switches from SEARCH to SEND after 4 minutes without movement

Self test: checks transmission, battery, and signal functions at startup

Interference Guard: manages and reduces signal interference

Group check: confirms the transmit frequency and signal strength of your partners' transceivers

Acoustic guidance: beeps get faster and louder as you close the distance

Auto Select: with several burials, it leads you first to the signal it receives at the highest strength

Marking function: mark a located burial and move on to the next signal

Deep burial mode: starts the fine search earlier, at more than 3 m, for very deep burials

Analog search: an added analog function for complex search scenarios

Pro features: Pro Check mode, pro search settings, and configurable guidance

Vital data detection: vital data sent by Bluetooth can help with triage decisions

Bluetooth: firmware updates, configuration, and search training through the Mammut app

Setup and installation

• Recall check: Mammut announced a voluntary recall on November 8, 2024 for Winter 2024/2025 units of this model. Look at the serial number on the label inside the battery compartment. If it does not start with 24, the device is not affected. If it starts with 24 and there is a green dot in the battery compartment, the device is not affected. If it starts with 24 and there is no green dot, the device is affected and should be sent to Mammut. Inspection or replacement is free of charge.
• Wear: on your upper body in the included Barryvox carrying system
• Before each tour: run a group check
• Training: Avalanche rescue gear only helps if you know how to use it. Get training and practice with your gear regularly. OMG runs AIARE avalanche courses.

Specs

• Type: digital 3 antenna transceiver
• Search strip width: 70 m
• Frequency: 457 kHz
• Weight: 180 g with batteries
• Dimensions: 115 x 68 x 21 mm
• Display: 2.3 in MIP, 300 x 240 px
• Batteries: 2 x AAA 1.5 V, alkaline or lithium
• Battery life: about 450 hours in SEND on alkaline, up to 550 hours on lithium
• Model number: 2620-00380

In the box

• Barryvox S2 transceiver
• Barryvox carrying system
• 2 AAA batteries

Warning

This item is classified as personal protective equipment (PPE). The instructions in the user manual must be read before and followed during use.