The ARTEX ELT 4000S is a portable Survival (S) ELT that transmits on 121.5 and 406 MHz. The ELT transmitter is based on the ARTEX ELT 4000 system and represents the latest ELT transmitter technology with a Lithium-free battery in a survival beacon, exempt from TSO C142/DO-227 approval. The ARTEX ELT 4000S is buoyant and automatically activates when deployed in water. A manual activation switch is also included for land use. An internal GPS (GNSS) will acquire position data for inclusion in the 406 MHz transmission, and a lanyard allows for attachment to a life raft.