Mountain Equipment Company

Ocean Signal RescuMe PLB-1 Personal Locator Beacon


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Really. If it's not up to snuff after you use it (a couple times) you can still bring it back. It lasts longer than 30 days, but not forever. We'll be fair about it.


A simple, subscription-free way to call for help. This beacon fits in a pocket and transmits on 2 frequencies simultaneously once activated. The 406 MHz signal goes to both the GEOSAR and LEOSAR satellite constellations. The 121.5 MHz transmission is a local signal that searchers can triangulate on once in your vicinity. A manually-activated SOS strobe guides SAR personnel at night.

  • Broadcasts SOS to government funded satellite networks, so there's no monthly fee
  • Transmits a unique beacon identifier you register with the Rescue Coordination Centre for fast response time as SAR teams know what to look for
  • 66-channel GPS receiver pinpoints locations within a few metres and embeds it in the signal to GEOSAR satellites
  • Battery lasts 7 years in storage, transmits for more than 24 hours at -20°C
  • Battery replacement can be done at an Ocean Signal authorised battery replacement centres
  • Retractable antenna improves signal strength in challenging conditions
  • 1-button activation with a spring loaded hard-plastic cover, prevents accidental activation
  • Cancel button for accidental activation
  • Test button for yearly readines checks
  • Bright white strobe (13 lumens) signals SOS transmission, and guides rescuers to your position
  • LED indicator provides transmission details
  • Floatation pouch included to make it bouyant
  • Waterproof to 15m

Tech specs

Weight116g (No colour SKU)
Ideal for
  • Emergency preparedness
Transmission duration
  • 24 hours @ -20ºC
Satellite network usedCOSPAS-SARSAT
Operating temperature-20 to 55°C
Frequency (alert)406MHz
Battery life (operating)24 h
Battery life (standby)61320 h
Storage temperature-30 to 70°C
Frequency (homing)121.5MHz
Dimensions3.3 x 5.1 x 7.7cm
Replaceable batteriesNo
BatteriesLithium-manganese (included)
  • ETSI EN 302-152-1
Made inUnited Kingdom

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