also: いれタイマー
on timer
A timer that turns an electrical device on at a set time. Often contrasted with 切タイマー (off timer).
See also: 切タイマー
I set the on timer for the air conditioner to cool the room before I get home.
This light has both an on timer and an off timer.
Variant with 入れ; the reading いれタイマー is specific to this form.
Compound of 入り (iri, 'entering, turning on') + タイマー (taimā, 'timer').