TELL CL100023 Heavy Duty Cylindrical Knob Satin Stainless 2 3 4" Backset Grade 2 Privacy Switches & Buttons The 492’s built in alarm The 492’s built in alarm may be used as a local door annunciator io intelligently monitors the network and wireless connectivity of each controller in your system and alerts you if any issues arise 1” diameter for latch bolt Performance Complies with ANSI A156
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