Alaxala AX2400S series, Hardware Instruction Manual

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2. Preparation for Installation
115
cover the device to prevent exposure to chemicals.
(9) Earthquake countermeasures
An earthquake can cause a switch to be moved, fall, or knocked out of a window, possibly
resulting in death or injury. Take sufficient measures to prevent the switch from moving or
falling.
NOTE
The actual seismic force on the device is different from that on land and varies
based on the amplification factor affected by the building structure and the floor
level of the room containing the switch. In general, the fifth floor and above of a
nine-story medium-rise building causing two to three times the amount of shaking
expected on land.
In actual earthquake cases in the past, the following has been discovered:

A switch moved 10 to 30 cm.

A rack fell down.

An object on the fixture in the room dropped onto a switch.