Correct

继电器

/ jìdiànqì / 
Strokes

Definition

relay (electronics)

Example

As a Noun

relay

1
Zhōngjì
中继
jìdiànqì
继电器

repeater relay

2
Tóngbù
同步
jìdiànqì
继电器

lock-on relay

3
Jìdiànqì
继电器
bǎohù
保护
  
/
dìngshí
定时

relay protection/timing