C4 User Manual
October 25, 2021 ©2021 Smartrise Engineering, Inc. All Rights Reserved Page 131
5. Place the reader bracket back onto the sensor base plate and secure.
Figure 180: Dual Sensor Array Assembly (Left Side)
10.7 Emergency Tape Break (ETB) Switch Assembly
The ETB Switch Assembly is optional.
The ETB switch is installed in the safety string in series with the Buffer switch.
Figure 181: Emergency Tape Break Switch in Series with Buffer Switch
There is slack in the wire when the tape tension spring is fully extended. This slack allows for
tape and/or building movement. If the tape breaks, the tension spring retracts and pulls the
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