The Algo 3400 Security Intercom System is an advanced digital communication solution for security, safety, and access control applications. Up to 2,048 intercom stations may be located indoors or outdoors for employee or public use to request assistance, door access, or communicate with security personnel or care-givers.  
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The Algo 3228 Doorphone provides a simple-to-install telephone-integrated Entry security intercom solution for business and residential applications. Visitors cause a telephone to ring which enables conversation when answered and the capability to allow remote entry using door release features.  
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