Manual Station & Key Switch (KS) must not be delayed because of this device, it will work immediately when it is used (pull devices) because this device is used in an emergency, the general public can use it as soon as I found out why fire? Best Key Switch that works requires a Key (for close-open) so that the device is working, so this device that people will need to have a specific Key.
การแปล กรุณารอสักครู่..