当安全锤离开安全锤座时，开关按钮弹起，电路连通，此时发声器发出报警信号。
When the hammer safety leaves the safety hammer holder, the switch button ejects, and the circuit is connected, so the sounder issues an alarming signal.
手动控制系统和由报警系统、开关式土壤水分传感器、开关式温度传感器构成的自动控制系统共同参与控制； 并且可以提供故障报警信号。
The automatic control system, which is composed of alarm system, switching soil moisture sensor and switching temperature sensor, makes joint control with the manual control system.
手动控制系统和由报警系统、开关式土壤水分传感器、开关式温度传感器构成的自动控制系统共同参与控制； 并且可以提供故障报警信号。
The automatic control system, which is composed of alarm system, switching soil moisture sensor and switching temperature sensor, makes joint control with the manual control system.
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