1. Install the fail-open switch module in the chassis

Perform the following steps to install the fail-open switch modules 6 thru 10 in the fail-open chassis (model 11). You can install up to four fail-open switches in a single chassis. If you are installing fail-open switch model 1, refer to the section, 1. (Models 1 thru 13) Install the fail-open switch.

1. Install the ears of the chassis.
   
   
   
    
2. Slide the switch into one of the openings in the chassis, until the faceplate of the switch rests against the chassis.
3. Secure the switch to the chassis by inserting screws provided through the holes on the fail-open switch faceplate and into the panel.
4. Place the 1U chassis against the front of a standard 19-inch rack.
5. Secure the chassis by inserting screws through holes on ears of the chassis.
6. (Optional) Install up to three additional switches by following these steps:
   1. Remove screws holding each of the removable blank plates from the front of the chassis.
   2. Perform steps 2 and 3 for installing a switch in the chassis for additional fail-open switches.

The fail-open switch is ready to be connected to a Sensor.