latch-in relay

例句：

1. 1. The latching relay is used to ensure that the circuit remains closed even after power is turned off.
   锁入继电器用于确保电路即使在断电后仍然保持闭合状态。
2. 2. In a latching relay system, the relay switches on and off in response to the closing of a door or gate.
   在锁入继电器系统中，继电器根据门或门的关闭而开闭。
3. 3. The latching relay is an essential component in many electrical systems, providing a reliable way to control powerflow.
   锁入继电器是许多电气系统中不可或缺的组成部分，它提供了一种可靠的方式来控制电力流动。