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Safety Standards for Automatic Door Operation

Automatic doors have been in use for many years. The first automatic sliding door was invented in the 1950s. The use of an “optical device” to control an automatic swing door dates back to the 1930s. As times and technology have changed, methods to efficiently install and operate automatic doors have changed. Since its inception […]
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The Relay Lockout Module

The Relay Lockout Module (RLM) has a very specific purpose for use with automatic swinging doors. The RLM interacts with an overhead presence sensor, mounted on the swing side of the door, to keep the sensor from detecting the door while it is in motion. The RLM also monitors inputs from the approach sensor or […]
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