Siemens (CRM-4) Controllable Relay Module 500-890401



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MXL/ MXLV Controllable Relay Module

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Siemens (CRM-4) Controllable Relay Module 500-890401

The Siemens CRM-4 Controllable Relay Module 500-890401 is designed to provide auxiliary control of building functions, such as: door-holder release; elevator capture; smoke control; lock release, etc.

If you should have any questions regarding this, or any life safety device, contact the Life Safety Consultants team at (888) 557-0558 or email us at

Additional information

Weight1 lbs
Dimensions4.3 × 4.5 × 6.5 in
Part Type

Controllable, Smoke Detector


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