A user-replaceable battery.
For use with the ACR GlobalFix V4 EPIRB series, Category 1 or Category 2.
Batteries should be replaced every 10 years.

 A full-featured EPIRB with high-efficiency electronics.

A full-featured EPIRB with high-efficiency electronics. 
Category II: manual release. 
Has multiple options for self-testing power and GPS. 
Broadcasts a 406 MHz signal and a 121.5 MHz homing signal. 
Features: 
- 66 channel internal GPS for fast signal acquisition 
- Highly visible LED strobe light 
- User-replacable Class 2 lithium battery. 

ACR GPS interface cable for Satellite3 406. Attaches Satellite3 406 to your vessel's GPS receiver. Allows a continuous update of your precise position data. In an emergency, your location is broadcast to rescuers. Connects to NMEA out jack. Weight: .1 lbs.

Hydrostatic release unit for ACR category I EPIRBs.
A patented rod system - does not rely on a battery.
Will deploy when submerged in 1.5 - 4 meters.
Designed to work with multiple beacon brackets:
- Sea Shelter
- Sea Shelter2
- Sea Shelter3
- Sea Shelter4.
This date-stamped product must be replaced every 2 years.
Dimensions: 2.5 X 3.4" X 2".

Ocean Signal SafeSea E100G EPIRB. Category I EPIRB. Unit includes an automatic-release hydrostatic housing. Operates in the 406 MHz satellite band. Fitted with a 121.5 MHz homing beacon. Integrated 50 channel GPS receiver for accurate positioning. Equipped with a high-brightness LED strobe light. Built-in test switch. User replaceable non-hazardous battery. Dimensions: 11-1/2" X 7-3/4" X 5".

Hammar H20E hydrostatic assembly.
Activated by water pressure.
Used with automatic-release EPIRBs.
USCG approval BV, MED, USCG Section 6.

Hydrostatic release kit for EPIRB units. Automatically activates before it reaches 4 meters (13 feet) in water depth. Includes: - HRU - HRU rod and rod collar - Self-tapping screw - R-clip (corded) - Identity label. Service life of two years. Weight: .5 lb.