horn relay

• 喇叭继电器

horn relay的用法和样例：

例句

1. Each Annunciator can have up to two Horn relays and two Group relays and each alarm channel can be configured to drive any of these common relays.
   每个传感器都有两个喇叭继电器和两个群继电器，并且每个警报主频都可以驱动任何一个通用继电器。