self-operating

adjective
UK /ˌself ˈɒpəreɪtɪŋ/
US /ˌself ˈɑːpəreɪtɪŋ/

Working all by itself without a person helping.

The self-operating door opened when we walked near it.


OTHER MEANINGS

2. Able to run or manage itself without outside control.

The self-operating machine keeps running all night.

3. Working on its own without needing a switch or button.

This self-operating toy moves when you clap.

4. Doing its job automatically as part of a system.

The self-operating alarm rings at seven every morning.