Drought Switch: Automatic shutdown and alarm when water supply is interrupted to protect the pump.
干旱开关：自动关机和报警时，供水中断，保护泵。
Limit switch: using limit switch component in designation to protect chain and ensure and security.
极限开关：吊上吊下都有极限开关部件，防止链条超出确保安全。
Limit switch: using limit switch component in designation to protect chain and ensure and security.
极限开关：吊上吊下都有极限开关部件，防止链条超出确保安全。
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