Life-Link, Avalanche Transceiver - Pieps Opti-4 All Winter Accessories >>> Winter Accessories by Life-Link More details and ordering info. Don't even think about heading into the backcounty without a transceiver. Grab your Pieps, shovel, probe and pack, check the avi forcast, and if conditions permit, ski or ride your favorite shot. The Pieps Opti-4 has both audio and visual transmission and operates on the World Standard frequency. Maximize your experience, but calculate your risks User input on Avalanche Transceiver - Pieps Opti-4 by Life-Link: Be the first to submit input on this product Submit Input: Your Name: Write or Paste Input here: Upload picture:      Review Guidelines