This is a DCC Concepts DCD-SAA-3W Zen 3 Wire Stay Alive Variety Pack for Zen Black and Blue+ Decoders

A set of 4 Stay-Alives with 3-wire connections to the decoder. Totally Plug and Play with Zen decoders.

• 1x Small
• 1x Medium
• 1x Large
• 1x Super

Usable with Zen Black, Zen Blue+, Lenz and ESU or any decoder with three-wire connections for Stay-Alive.

Please note that connection of a DCC concepts Zen Stay-Alive to a non-DCC concepts decoder may invalidate your warranty, please check documentation which came with your decoder for details.